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 A111469 #4 Dec 05 2013 19:57:05 %S A111469 1,5,30,174,1102,8004,64908,631296,7632144,85538304,767957760, %T A111469 10378782720,141810600960,2211872624640,34073996544000, %U A111469 592443113472000,9995136528384000,193299238895616000,3978509063587430400 %N A111469 Row sums of A111467. %Y A111469 Cf. A111467, A111468. %K A111469 easy,nonn %O A111469 1,2 %A A111469 _Amarnath Murthy_, Aug 05 2005 %E A111469 More terms from _David Wasserman_, Feb 10 2009