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 A030036 #11 Oct 15 2021 21:29:15
%S A030036 1,1,1,1,1,1,2,3,5,8,13,26,47,86,159,292,584,1121,2156,4153,8014,
%T A030036 16028,31472,61823,121490,238827,477654,947294,1878560,3725648,
%U A030036 7389473,14900436,29796719,59593438,119178862,238341696,482287600,970054641,1951222247,3924973230
%N A030036 a(n+1) = Sum_{k=0..floor(n/5)} a(k) * a(n-k).
%H A030036 Seiichi Manyama, <a href="/A030036/b030036.txt">Table of n, a(n) for n = 0..1000</a>
%o A030036 (PARI) lista(nn) = {my(v=vector(nn+2, i, 1)); for(n=3, nn, v[n+2]=sum(k=1, 1+n\5, v[k]*v[n+2-k])); v; } \\ _Jinyuan Wang_, Mar 18 2020
%Y A030036 Cf. A000992, A030032, A030034, A030037, A030038, A030039.
%K A030036 nonn
%O A030036 0,7
%A A030036 _N. J. A. Sloane_
%E A030036 More terms from _Jinyuan Wang_, Mar 18 2020