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 A090322 #19 Apr 22 2016 22:16:16 %S A090322 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,91,20,12,22,32,24,52,26, %T A090322 72,28,92,30,13,32,33,34,35,36,37,38,39,40,14,24,34,44,54,64,74,84,94, %U A090322 50,15,52,35,54,55,56,75,58,95,60,16,26,36,64 %N A090322 Duplicate of A076084. %K A090322 dead %O A090322 1,2