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 A159085 #4 Feb 16 2025 08:33:10 %S A159085 1,37,893,18149,340630,6169385,110446361,1982469403,36003022705, %T A159085 665572282770 %N A159085 Number of permutations of 1..n containing the relative rank sequence { 124653 } at any spacing. %C A159085 Same series for 356421 421356 653124 453621 324156 126354 651423 356412 421365 214653 563124 453612 324165 216354 561423 %H A159085 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PermutationPattern.html">Permutation Pattern</a> %Y A159085 A056986 A158005 A158423 %K A159085 nonn %O A159085 6,2 %A A159085 _R. H. Hardin_ Apr 05 2009