Preface.- 1. S.D. Adhikari, B. Roy, S. Sarkar: Weighted Zero-Sums for Some Finite Abelian Groups of Higher Ranks.- 2. S. Akhtari: Counting Monogenic Cubic Orders.- 3. P. Baird-Smith, A. Epstein, K. Flint, S.J. Miller: The Zeckendorf Game.- 4. H.P. Chaos, C.E. Finch-Smith: Iterated Riesel and Iterated Sierpinski Numbers.- 5. M. Desgrottes, S. Senger, D. Soukup, R. Zhu: A General Framework for Studying Finite Rainbow Configurations.- 6. M. DiNasso: Translation Invariant Filters and van der Waerden's Theorem.- 7. R.W. Donley, Jr.: Central Values for Clebsch-Gordan Coefficients.- 8. L.G. Fel: Numerical Semigroups Generated by Squares and Cubes of Three Consecutive Integers.- 9. I. Goldbring, S. Leth: On Supra-sim Sets of Natural Numbers.- 10. S. Han, A.M. Masuda, S. Singh, J. Thiel: Mean Row Values in (u.v)-Calkin-Wilf Trees.- 11. M.B. Nathanson: Dimensions of Monomial Varieties.- 12. Matrix Scaling Limits in Finitely Many Iterations (M.B. Nathanson).- 13. M.B. Nathanson: Not All Groups are LEF Groups, or, Can You Know if a Group is Infinite?.- 14. A. Rice: Binary Quadratic Forms in Difference Sets.- 15. D.A. Ross: Egyptian Fractions, Non-Archimedean Ordered Field, Nonstandard Analysis.- 16. A. Rukhin: A Dual-Radix Approach to Steiner's 1-Cycle Theorem.- 17. Y. Tschinkel, K. Yang: Potentially Stably Rational del Pezzo Surfaces Over Nonclosed Fields.
