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 A077358 #3 Nov 10 2007 03:00:00 %S A077358 127,131,137,139,151,157,173,179,223,227,229,233,239,251,257,271,277 %N A077358 Duplicate of A069686. %K A077358 dead %O A077358 1,1