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 A130660 #6 Mar 01 2015 15:02:38 %S A130660 0,0,0,0,0,0,17,496,8576,115072,1328336,13899904,135927040,1266360320, %T A130660 11385790720,99682672640,855303553024,7226263666688,60329459699712, %U A130660 499027284295680 %N A130660 1/16 the number of permutations of 0..n having exactly 4 maxima. %F A130660 a(n) = A000517(n+1)/16. - _R. J. Mathar_, Mar 01 2015 %Y A130660 Cf. A100575. %K A130660 nonn %O A130660 0,7 %A A130660 _R. H. Hardin_, Aug 11 2007