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 A130661 #6 Mar 01 2015 15:05:29 %S A130661 0,0,0,0,0,0,0,0,31,1382,35396,686044,11204160,163014240,2184175040, %T A130661 27534645760,331417960960,3848744330240,43455499573248,479802090507264 %N A130661 1/256 the number of permutations of 0..n having exactly 5 maxima. %F A130661 a(n) = A179708(n+1)/256. - _R. J. Mathar_, Mar 01 2015 %Y A130661 Cf. A100575. %K A130661 nonn %O A130661 0,9 %A A130661 _R. H. Hardin_, Aug 11 2007