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 A159113 #4 Feb 16 2025 08:33:10
%S A159113 1,37,893,18153,340826,6174960,110565106,1984504925,36030424805
%N A159113 Number of permutations of 1..n containing the relative rank sequence { 145236 } at any spacing.
%C A159113 Same series for 632541
%H A159113 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PermutationPattern.html">Permutation Pattern</a>
%Y A159113 A056986 A158005 A158423
%K A159113 nonn
%O A159113 6,2
%A A159113 _R. H. Hardin_ Apr 05 2009