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 A292692 #12 Mar 17 2024 05:42:57 %S A292692 1,6,217,13997,1283817,151778430,21902350480,3726598826676, %T A292692 729894290301789,161683308639785288,39960246577221138239, %U A292692 10900687898284398341055,3253179971490906621196740,1054372896576358319473872858,368810384314446516250937494104 %N A292692 a(n) = A258220(2n,n). %H A292692 Vaclav Kotesovec, <a href="/A292692/b292692.txt">Table of n, a(n) for n = 0..290</a> (terms 0..200 from Alois P. Heinz) %F A292692 a(n) ~ c * d^n * n! / sqrt(n), where d = 25.81959672662517201... and c = 0.28310309251343879... - _Vaclav Kotesovec_, Dec 01 2017 %F A292692 Conjecture: d = (51*sqrt(17) - 107)/4. - _Vaclav Kotesovec_, Mar 17 2024 %Y A292692 Cf. A258220. %K A292692 nonn %O A292692 0,2 %A A292692 _Alois P. Heinz_, Sep 20 2017