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 A316356 #8 Jun 30 2018 09:45:25 %S A316356 1,0,0,1,2,3,6,11,21,39,72,135,252,470,876,1635,3051,5691,10617,19808, %T A316356 36956,68946,128628,239976,447714,835278,1558337,2907320,5424056, %U A316356 10119411,18879319,35222285,65712612,122597016,228723648,426719269,796110663,1485267309,2770995395 %N A316356 a(0) = 1 and a(n) = A224704(n) - A224704(n-1). %H A316356 Seiichi Manyama, <a href="/A316356/b316356.txt">Table of n, a(n) for n = 0..3695</a> %Y A316356 Column 2 of A316354 (except a(0)). %Y A316356 Cf. A224704. %K A316356 nonn %O A316356 0,5 %A A316356 _Seiichi Manyama_, Jun 30 2018