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 A081527 #3 Apr 03 2014 11:35:04 %S A081527 1,2,4,6,8,11,13,16,19,22,25,28,31,34,38,41,44,48,51,55,59,62,66,70, %T A081527 74,78,81,85,89,93,97,101,106,110,114,118,122,126,131,135,139,144,148, %U A081527 152,157,161,166,170,174,179,183,188,193,197,202,206,211,216 %N A081527 Erroneous version of A022819. %K A081527 dead %O A081527 1,2 %E A081527 Corrected and extended by _Martin Fuller_, Jan 03 2006