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 A161309 #6 Jul 22 2025 06:40:44 %S A161309 0,0,0,1,1,1,1,2,1,2,1,4,2,4,4,6,5,8,7,10,9,12,11,15,14,18,18,23,22, %T A161309 27,27,33,34,39,41,47,47,54,56,65,65,75,77,85,88,98,103,112,117,128, %U A161309 132,144,150,165,170,185,193,207,216,233,245,261,274,293,305,326,341,365,380,405,423 %N A161309 Number of partitions of n into Somos-4 sequence numbers A006720 where every part appears at least 4 times. %H A161309 R. H. Hardin, <a href="/A161309/b161309.txt">Table of n, a(n) for n=1..1000</a> %K A161309 nonn %O A161309 1,8 %A A161309 _R. H. Hardin_ Jun 06 2009