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 A147769 #5 Aug 13 2013 14:04:01 %S A147769 1,1767263190,1125718321602329678223000, %T A147769 155225932761938574730157553835938696696000, %U A147769 7667961765084109378347562069301502363151989537397618954230000 %N A147769 Late-growing permutations: number of permutations of 19 indistinguishable copies of 1..n with every partial sum <= the same partial sum averaged over all permutations. %Y A147769 Cf. A147681. %Y A147769 Column k=19 of A215561. %K A147769 nonn %O A147769 1,2 %A A147769 _R. H. Hardin_ May 01 2009