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 A159729 #6 May 14 2020 17:00:08 %S A159729 0,24,13896,3347088,595973360,93992305032,14015268159704, %T A159729 2027725518697376,287867804621478048,40320948446041301720, %U A159729 5589326195307268168392,768314046269046341078064,104876358654665681729030736,14230976452809572524526026408,1921184312523441298037576065080 %N A159729 Number of permutations of 4 indistinguishable copies of 1..n arranged in a circle with exactly 3 local maxima. %H A159729 Andrew Howroyd, <a href="/A159729/b159729.txt">Table of n, a(n) for n = 1..200</a> %o A159729 (PARI) \\ CircPeaksBySig defined in A334778. %o A159729 a(n) = {CircPeaksBySig(vector(n, i, 4), [3])[1]} \\ _Andrew Howroyd_, May 14 2020 %Y A159729 Cf. A159727, A159728, A334778. %K A159729 nonn %O A159729 1,2 %A A159729 _R. H. Hardin_, Apr 20 2009 %E A159729 Terms a(7) and beyond from _Andrew Howroyd_, May 14 2020