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 A113944 #2 Jun 23 2015 11:22:20 %S A113944 3,6,9,11,19,25,31,56,82,91,98,103,114,115,141,159,195,198,200,208, %T A113944 212,214,219,246,253,282,283,284,289,294,300,306,322,343,349,360,373, %U A113944 378,384,393,414,427,439,440,454,459,461,464,473,474,491,521 %N A113944 Square roots of A073946. %K A113944 nonn %O A113944 1,1 %A A113944 _David Garber_, Nov 13 2002