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 A159098 #4 Feb 16 2025 08:33:10
%S A159098 1,37,895,18249,343685,6243778,112041954,2014142156,36601451528
%N A159098 Number of permutations of 1..n containing the relative rank sequence { 135264 } at any spacing.
%C A159098 Same series for 462531 315246 642513 536241 241536 142635 635142
%H A159098 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PermutationPattern.html">Permutation Pattern</a>
%Y A159098 A056986 A158005 A158423
%K A159098 nonn
%O A159098 6,2
%A A159098 _R. H. Hardin_ Apr 05 2009