This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A161258 #6 Jul 22 2025 06:35:34 %S A161258 0,0,0,0,1,1,1,1,1,2,1,2,1,2,2,3,3,4,4,6,5,6,6,8,8,9,9,11,11,13,12,15, %T A161258 14,17,17,20,19,23,22,28,27,33,31,37,37,42,43,49,50,56,56,65,64,74,75, %U A161258 84,83,93,95,106,108,119,121,132,135,148,150,163,167,181,186,201,207,222,230,247,254 %N A161258 Number of partitions of n into central polygonal numbers A000124 where every part appears at least 5 times. %H A161258 R. H. Hardin, <a href="/A161258/b161258.txt">Table of n, a(n) for n=1..1000</a> %K A161258 nonn %O A161258 1,10 %A A161258 _R. H. Hardin_ Jun 06 2009