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 A163484 #2 Mar 31 2012 13:21:18 %S A163484 0,4,22,40,108,188,258,336,600,884,1190,1528,1804,2092,2394,2720,3760, %T A163484 4836,5942,7112,8324,9564,10890,12272,13360,14484,15598,16792,17996, %U A163484 19212,20490,21824,25952,30148,34390,38760,43164,47612,52242,56976 %N A163484 Antidiagonal sums of A147995 and A163545. %K A163484 nonn %O A163484 0,2 %A A163484 _Antti Karttunen_, Aug 01 2009