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Volume 13 (2013) 
- 
A1:
Simple Arithmetical Criteria for Irreducibility of Polynomials with Integer Coefficients
 - 
A2:
A Short Proof of a Result of Gica and Luca
 - 
A3:
Counting Heron triangles with Constraints
- 
Pantelimon Stănică, Santanu Sarkar, Sourav Sen Gupta, Subhamoy Maitra, and Nirupam Kar
 
 - 
A4:
Ramsey Type Results on the Solvability of Certain Equation in Zm
 - 
A5:
A Combinatorial Proof of S-adicity for Sequences with Linear Complexity
- 
Julien Leroy and Gwenäel Richomme
 
 - 
A6:
On Interpolating Power Series
 - 
A7:
On Bounds for Two Davenport-type Constants
- 
H. G. Grundman and C. S. Owens
 
 - 
A8:
On the Diophantine Equation x2-kxy+y2+lx=0
- 
Li Feng, Pingzhi Yuan, and Yongzhong Hu
 
 - 
A9:
On a Sequence of Polynomials with Hypothetically Integer Coefficients
- 
Vladimir Shevelev and Peter J. C. Moses
 
 - 
A10:
On Divisibility Properties of Some Differences of the Central Binomial Coefficients and Catalan Numbers
 - 
A11:
Generalized Binomial Expansions and Bernoulli Polynomials
 - 
A12:
The Distribution of Solutions to xy = N  (MOD a) with an Application to Factoring Integers
 - 
A13:
Distribution Laws of Pairs of Divisors
 - 
A14:
Sharp Threshold Asymptotics for the Emergence of Additive Bases
- 
Anant Godbole, Chang Mou Lim, Vince Lyzinski, and Nicholas George Triantafillou
 
 - 
A15:
On an Analogue to the Lucas-Lehmer-Riesel Test Using Elliptic Curves
- 
Markus Kirschmer and Michael H. Mertens
 
 - 
A16:
Restricted Integer Partition Functions
 - 
A17:
Brun Meets Selmer
 - 
A18:
Thick Subsets that Do Not Contain Arithmetic Progressions
 - 
A19:
Taking the Convoluted Out of Bernoulli Convolutions: A Discrete Approach
- 
Neil J. Calkin, Julia Davis, Michelle Delcourt, Zebediah Engberg, Jobby Jacob,  and Kevin James
 
 - 
A20:
Some Results on Balancing, Cobalancing, (a,b)-Type Balancing, and (a,b)-Type Cobalancing Numbers
- 
Bouroubi Sadek and Debbache Ali
 
 - 
A21:
Valuations and Combinatorics of Truncated Exponential Sums
- 
T. Amdeberhan, D. Callan, and V. Moll
 
 - 
A22:
Strict Schur Numbers
- 
Tanbir Ahmed, Michael G. Eldredge, Jonathan J. Marler, and Hunter S. Snevily
 
 - 
A23:
On  q-Analog of Wolstenholme Type Congruences for Multiple Harmonic Sums
 - 
A24:
On the Fourier Transform of the Greatest Common Divisor
 - 
A25:
Weighted Lonesum Matrices and Their Generating Function
- 
Ken Kamano, Yasuo Ohno, and Shuji Yamamoto
 
 - 
A26:
On Multiplicative Sidon Sets
- 
David Wakeham and David R. Wood
 
 - 
A27:
Some Weighted Sums of Products of Lucas Sequences
- 
Emrah Kılıç and Neşe Ömür
 
 - 
A28:
Additive Energy and the Falconer Distance Problem in Finite Fields
- 
Doowon Koh and Chun-Yen Shen
 
 - 
A29:
A Combinatorial Interpretation of the Catalan and Bell Number Difference Tables
- 
Jocelyn Quaintance and Harris Kwong
 
 - 
A30:
Pisot Numbers and Chromatic Zeros
 - 
A31:
Coordinate Sum and Difference Sets of d-Dimensional Modular Hyperbolas
- 
Amanda Bower, Ron Evans, Victor Luo, and Steven J Miller
 
 - 
A32:
An Infinite Family of Recursive Formulas Generating Power Moments of Kloosterman Sums with Trace One Arguments: O(2n+1, 2r) Case
 - 
A33:
The Diophantine Equation Fny + Fn+1x = Fmx
- 
Florian Luca and Roger Oyono
 
 - 
A34:
A Note on the Multiplicative Structure of an Additively Shifted Product Set AA+1
 - 
A35:
Representations of Squares by Certain Septenary Quadratic Forms
- 
Shaun Cooper, Heung Yeung Lam, and Dongxi Ye
 
 - 
A36:
Catalan Numbers Modulo a Prime Power
- 
Yong-Gao Chen and Wen Jiang
 
 - 
A37:
GoNI: Primes Represented by Binary Quadratic Forms
- 
Pete L. Clark, Jacob Hicks, Hans Parshall, and Katherine Thompson
 
 - 
A38:
A Combinatorial Proof of Two Equivalent Identities by Free 2-Motzkin Paths
 - 
A39:
Improving the Chen and Chen Result for Odd Perfect Numbers
- 
Kevin A. Broughan, Daniel Delbourgo, and Qizhi Zhou
 
 - 
A40:
Finite Sums that Involve Reciprocals of Products of Generalized Fibonacci Numbers
 - 
A41:
Compositions Constrained by Graph Laplacian Minors
- 
Benjamin Braun, Robert Davis, Jessica Doering, Ashley Harrison,
 Jenna Noll, and Clifford Taylor
 
 - 
A42:
Edge Growth in Graph Squares
 - 
A43:
New Bounds and Computations on Prime-Indexed Primes
- 
Jonathan Bayless, Dominic Klyve, and Tomás Oliveira e Silva
 
 - 
A44:
Gap Distribution of Farey Fractions Under Some Divisibility Constraints
- 
Florin P. Boca, Byron Heersink, and Paul Spiegelhalter
 
 - 
A45:
On Finite Sums and Integral Representations
- 
Anthony Sofo and N. Batir
 
 - 
A46:
Fine-Wilf Graphs and the Generalized Fine-Wilf Theorem
 - 
A47:
On the Least Significant 2-Adic and Ternary Digits of Certain Stirling Numbers
 - 
A48:
On the Density of Happy Numbers
 - 
A49:
A Remark on Relatively Prime Sets
 - 
A50:
Intersecting Rational Beatty Sequences
 - 
A51:
New Proofs for the p,q-Analogue of Chu-Vandermonde's Identity
 - 
A52:
Remarks on Tiny Zero-Sum Sequences
- 
Yushuang Fan, Weidong Gao, Jiangtao Peng, Linlin Wang, and Qinghai Zhong
 
 - 
A53:
A Note on  Irregularities of Distribution
 - 
A54:
Generalizing Delannoy Numbers via Counting Weighted Lattice Paths
 - 
A55:
On the Least Primitive Root Expressible as a Sum of Two Squares
 - 
A56:
Stabilization of Coefficients for Partition Polynomials
- 
Robert P. Boyer and William J. Keith
 
 - 
A57:
On Sets with More Restricted Sums than Differences
- 
David Penman and Matthew Wells
 
 - 
A58:
On an Incomplete Argument of Erdős on the Irrationality of Lambert Series
 - 
A59:
Generalization of Universal Partition and Bipartition Theorems
- 
Hacène Belbachir and Miloud Mihoubi
 
 - 
A60:
Some Weighted Sums of Powers of Fibonacci Polynomials
 - 
A61:
Congruences of Concave Composition Functions
- 
Keenan Monks and Lynnelle Ye
 
 - 
A62:
Disjunctive Rado Numbers for ax1+x2=x3 and bx1+x2=x3
- 
Liz Lane-Harvard and Daniel Schaal
 
 - 
A63:
How to Write a Permutation as a Product of Involutions (and Why You Might Care)
- 
T. Kyle Petersen and Bridget Eileen Tenner
 
 - 
A64:
On the Higher-Dimensional Generalization of a Problem of Roth
 - 
A65:
Independent Divisibility Pairs on the Set of Integers from 1 to N
- 
Rosemary Sullivan and Neil Watling
 
 - 
A66:
Cycles in Repeated Exponentiation Modulo pn
 - 
A67:
Computation of an Improved Lower Bound to Giuga's Primality Conjecture
- 
Jonathan Borwein, Christopher Maitland, and Matthew Skerritt
 
 - 
A68:
Convolution Sums Involving Legendre-Jacobi Symbol and Divisor Functions
 - 
A69:
Optimal Primitive Sets with Restricted Primes
- 
William D. Banks and Greg Martin
 
 - 
A70:
A Zero-Sum Theorem Over Z
- 
Marvin L. Sahs, Papa A. Sissokho, and Jordan N. Torf
 
 - 
A71:
On the Divisibility of an ± bn by Powers of n
 - 
A72:
Lower Bounds for Sumsets of Multisets in Fp2
- 
Greg Martin, Alexis Peilloux, and Erick B. Wong
 
 - 
A73:
On Sequences Without Geometric Progressions
- 
Melvyn B. Nathanson and Kevin O'Bryant
 
 - 
A74:
Inclusion-Exclusion Polynomials with Large Coefficients
 - 
A75:
An Explicit Formula for Higher Order Bernoulli Polynomials of the Second Kind
- 
Haiqing Wang and Guodong Liu
 
 - 
A76:
A Note on a Conjecture of Erdős, Graham, and Spencer
- 
Zhongfeng Zhang and Pingzhi Yuan
 
 - 
A77:
Squares and Difference Sets in Finite Fields
- 
C. Bachoc, M. Matolcsi, and I. Z. Ruzsa
 
 - 
A78:
A Family of Fibonacci-Like Conditional Sequences
- 
Daniel Panario, Murat Sahin, and Qiang Wang
 
 - 
A79:
On the Residue Classes of π(n) Modulo t
- 
Ping Ngai Chung and Shiyu Li
 
 - 
A80:
S-Diophantine Quadruples with Two Primes Congruent to 3 Modulo 4
- 
László Szalay and Volker Ziegler
 
 - 
A81:
The Average Largest Prime Factor
 
Games Articles
- 
G1:
Captured-Reversible Moves and Star Decomposition Domination in Hex
- 
Philip Henderson and Ryan B. Hayword
 
 - 
G2:
Cofinite Induced Subgraphs of Impartial Combinatorial Games: An Analysis of CIS-Nim
- 
Scott M. Garrabrant, Eric J. Friedman, and Adam Scott Landsberg
 
 - 
G3:
Pirates and Treasure