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 A152516 #6 May 12 2020 18:19:23
%S A152516 0,5,285365,3328373375,23122804891093,132106319858700205,
%T A152516 697701196338306192217,3568377130807709398000279,
%U A152516 18013809185839252548978200161,90462608845509339028810174966669,453352973288072573009512458761236141,2270154484704085339079608424120307696559
%N A152516 1/21 of the number of permutations of 6 indistinguishable copies of 1..n with exactly 5 local maxima.
%H A152516 Andrew Howroyd, <a href="/A152516/b152516.txt">Table of n, a(n) for n = 1..200</a>
%o A152516 (PARI) \\ PeaksBySig defined in A334774.
%o A152516 a(n) = {PeaksBySig(vector(n,i,6), [4])[1]/21} \\ _Andrew Howroyd_, May 12 2020
%Y A152516 Cf. A152513, A334774.
%K A152516 nonn
%O A152516 1,2
%A A152516 _R. H. Hardin_, Dec 06 2008
%E A152516 Terms a(7) and beyond from _Andrew Howroyd_, May 12 2020