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 A159094 #4 Feb 16 2025 08:33:10
%S A159094 1,37,892,18099,339137,6134494,109738838,1969358127,35774344332,
%T A159094 661750923896
%N A159094 Number of permutations of 1..n containing the relative rank sequence { 134562 } at any spacing.
%C A159094 Same series for 265431 512346 643215 543261 234516 162345 615432
%H A159094 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PermutationPattern.html">Permutation Pattern</a>
%Y A159094 A056986 A158005 A158423
%K A159094 nonn
%O A159094 6,2
%A A159094 _R. H. Hardin_ Apr 05 2009