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 A159125 #4 Feb 16 2025 08:33:10
%S A159125 1,37,895,18252,343859,6249828,112207082,2018062151,36686671476
%N A159125 Number of permutations of 1..n containing the relative rank sequence { 153624 } at any spacing.
%C A159125 Same series for 426351 351426 624153
%H A159125 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PermutationPattern.html">Permutation Pattern</a>
%Y A159125 A056986 A158005 A158423
%K A159125 nonn
%O A159125 6,2
%A A159125 _R. H. Hardin_ Apr 05 2009