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 A159130 #4 Feb 16 2025 08:33:10
%S A159130 1,37,893,18152,340807,6175638,110619661,1986645914,36095203611,
%T A159130 667491974034
%N A159130 Number of permutations of 1..n containing the relative rank sequence { 154632 } at any spacing.
%C A159130 Same series for 236451 541326 623145 423561 354216 165324 612453
%H A159130 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PermutationPattern.html">Permutation Pattern</a>
%Y A159130 A056986 A158005 A158423
%K A159130 nonn
%O A159130 6,2
%A A159130 _R. H. Hardin_ Apr 05 2009