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 A030377 #4 Mar 30 2012 18:56:18 %S A030377 3,11,19,20,22,24,26,27,39,51,63,65,68,71,74,75,87,99,111,113,116,119, %T A030377 122,123,124,127,130,133,135,136,139,142,145,147,148,151,154,157,159, %U A030377 160,161,163,164,166,167,169,170,171,187,203 %N A030377 Position of n-th 3 in A030373. %K A030377 nonn %O A030377 1,1 %A A030377 _Clark Kimberling_