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 A087927 #4 Mar 31 2012 12:35:01 %S A087927 32,1947648,1683453629440,5338455334819710720, %T A087927 48653237600359922073441120,1080582891996915763252912268789760 %N A087927 Number of ways of arranging the numbers 1 ... 6n into a 6 X n array so there is exactly one local maximum. %Y A087927 A row of the array in A087783. Cf. A007846. %K A087927 nonn %O A087927 1,1 %A A087927 _R. H. Hardin_, Oct 27 2003