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 A031403 #5 Mar 30 2012 18:35:29 %S A031403 2,3,4,6,7,9,10,12,17,18,25,29,34,36,41,54,58,63,71,81,82,95,103,106, %T A031403 109,118,143,155,162,194,201,223,230,237,249,255,262,281,303,309,325, %U A031403 358,370,373,390,426,433,434,449,475,482,527,530,554,577 %N A031403 Sum of terms in period of continued fraction for sqrt(A031402(n)). %K A031403 nonn %O A031403 1,1 %A A031403 _David W. Wilson_