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 A091139 #3 Mar 30 2012 18:36:39 %S A091139 1,1,2,5,16,66,346,2229,17000,148898,1465364,15957314,190158712, %T A091139 2459041744,34278016954,512253587397,8168812190472,138450960309882 %N A091139 Row sums of triangle A091063. %C A091139 The initial terms of the binomial transform of the n-th row of triangle A091063 forms the n-th row of triangle A059438 transposed (permutations of [1..n] with k components); the row sums of A059438 equal the factorials. %F A091139 G.f.: A(x) = 1/(1-x*g(x)) where g(x) is the g.f. of A075834 shift 1 place left. %Y A091139 Cf. A091063. %K A091139 nonn %O A091139 0,3 %A A091139 _Paul D. Hanna_, Dec 21 2003