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 A030492 #4 Mar 30 2012 18:56:18 %S A030492 124,128,134,138,142,147,154,158,164,168,172,177,184,188,194,198,202, %T A030492 207,211,216,221,226,231,236,244,248,254,258,262,267,274,278,284,288, %U A030492 292,297,304,308,314,318,322,327,331,336,341 %N A030492 Position of n-th 5 in A030298. %K A030492 nonn %O A030492 1,1 %A A030492 _Clark Kimberling_