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 A159097 #4 Feb 16 2025 08:33:10
%S A159097 1,37,894,18194,341847,6195090,110911952,1989987465,36112151377,
%T A159097 666961008490
%N A159097 Number of permutations of 1..n containing the relative rank sequence { 135246 } at any spacing.
%C A159097 Same series for 642531 635241 142536
%H A159097 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PermutationPattern.html">Permutation Pattern</a>
%Y A159097 A056986 A158005 A158423
%K A159097 nonn
%O A159097 6,2
%A A159097 _R. H. Hardin_ Apr 05 2009