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 A159731 #6 May 14 2020 17:02:12
%S A159731 0,0,2988,27458352,61383379820,81667937763552,85059308335953056,
%T A159731 77970400876665940256,66589111000653219026676,
%U A159731 54577055338226000658293040,43623618238133057304530730072,34310058645060995324654729060496,26688777245272247361239042667969036
%N A159731 Number of permutations of 4 indistinguishable copies of 1..n arranged in a circle with exactly 5 local maxima.
%H A159731 Andrew Howroyd, <a href="/A159731/b159731.txt">Table of n, a(n) for n = 1..200</a>
%o A159731 (PARI) \\ CircPeaksBySig defined in A334778.
%o A159731 a(n) = {CircPeaksBySig(vector(n, i, 4), [5])[1]} \\ _Andrew Howroyd_, May 14 2020
%Y A159731 Cf. A159727, A159728, A334778.
%K A159731 nonn
%O A159731 1,3
%A A159731 _R. H. Hardin_, Apr 20 2009
%E A159731 Terms a(7) and beyond from _Andrew Howroyd_, May 14 2020