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 A151582 #7 May 06 2020 01:38:09 %S A151582 0,10,11143,1831644,132439905,5925941490,192648942945,4982201574576, %T A151582 108507581733075,2068026851853900,35442327497832350, %U A151582 557245611341867160,8160353475203019510,112618455705219419340,1478355077007310516350,18597419323476152223600 %N A151582 Number of permutations of 1..n arranged in a circle with exactly 9 adjacent element pairs in decreasing order. %H A151582 Andrew Howroyd, <a href="/A151582/b151582.txt">Table of n, a(n) for n = 9..500</a> %Y A151582 Column k=9 of A334218. %K A151582 nonn %O A151582 9,2 %A A151582 _R. H. Hardin_, May 21 2009 %E A151582 Terms a(17) and beyond from _Andrew Howroyd_, May 05 2020