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 A159114 #4 Feb 16 2025 08:33:10
%S A159114 1,37,894,18208,342672,6224250,111721428,2009540349,36544829517,
%T A159114 675995682446
%N A159114 Number of permutations of 1..n containing the relative rank sequence { 145263 } at any spacing.
%C A159114 Same series for 362541 415236 632514 532641 245136 146235 631542
%H A159114 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PermutationPattern.html">Permutation Pattern</a>
%Y A159114 A056986 A158005 A158423
%K A159114 nonn
%O A159114 6,2
%A A159114 _R. H. Hardin_ Apr 05 2009