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 A080566 #3 Mar 30 2012 16:49:39 %S A080566 1,5,11,18,26,35,46,59,74,90,107,125,144,164,185,208,233,260,289,320, %T A080566 353,387,422,458,495,533,572,612,653,695,738,782,827,874,923,974,1027, %U A080566 1082,1139,1198,1259,1322,1387,1454,1523,1593,1664,1736,1809,1883,1958 %N A080566 Partial sums of A079000. %K A080566 nonn %O A080566 1,2 %A A080566 _N. J. A. Sloane_, Feb 21 2003