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 A143371 #7 Jan 19 2012 17:14:59 %S A143371 1,8,25,56,105,176,273,400,561,760,1001,1288,1625,2016,2465,2976,3553, %T A143371 4200,4921,5720,6601,7568,8625,9776,11025,12376,13833,15400,17081, %U A143371 18880,20801,22848,25025,27336,29785,32376,35113,38000,41041,44240,47601 %N A143371 Duplicate of A131423. %K A143371 dead %O A143371 1,2