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 A159117 #4 Feb 16 2025 08:33:10
%S A159117 1,37,892,18102,339301,6139802,109872694,1972283277,35832835698,
%T A159117 662855671963
%N A159117 Number of permutations of 1..n containing the relative rank sequence { 145632 } at any spacing.
%C A159117 Same series for 236541 541236 632145 432561 345216 165234 612543
%H A159117 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PermutationPattern.html">Permutation Pattern</a>
%Y A159117 A056986 A158005 A158423
%K A159117 nonn
%O A159117 6,2
%A A159117 _R. H. Hardin_ Apr 05 2009