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 A317828 #6 Aug 11 2018 22:00:06 %S A317828 1,2,4,5,11,26,52,92,198,249,560,1311,2776,6367,14086,21007,48034, %T A317828 56031,131781,317515,695541,804219,2011535,4555083,8040378,18688105, %U A317828 25235398,59995537,68141074,165243129,407951724,927908528 %N A317828 Record values in A317826. %F A317828 a(n) = A317826(A317827(n)). %Y A317828 Cf. A317826, A317827, A317829 (a subsequence). %K A317828 nonn %O A317828 1,2 %A A317828 _Antti Karttunen_, Aug 10 2018