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 A125859 #3 Mar 30 2012 18:37:02 %S A125859 1,2,4,10,35,184,1531,21080,497017,20533486,1508839043,199272672334, %T A125859 47686000150774,20817464210086523,16678749474397158418, %U A125859 24657143458135746104239,67591557017940565183386368 %N A125859 Antidiagonal sums of table A125860. %Y A125859 Cf. A125860; A016121, A125862, A125863, A125864, A125865, A125861. %K A125859 nonn %O A125859 0,2 %A A125859 _Paul D. Hanna_, Dec 13 2006