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 A119764 #2 Mar 31 2012 13:21:31 %S A119764 1,2,5,2,9,5,15,4,3,9,19,5,21,15,11,4,33,6,25,9,13,19,39,7,5,29,21,15, %T A119764 61,11,45,8,65,33,67,6,49,35,25,9,73,13,53,106,19,77,39,79,7,10,81,29, %U A119764 83,59,21,15,43,61,87,11,89,63,45,8,23,65,93,33,47,67,135,12,97,69,49 %N A119764 Smallest number whose square begins with n in binary. %Y A119764 Binary version of A018851. %K A119764 base,nonn %O A119764 1,2 %A A119764 _Franklin T. Adams-Watters_, Aug 04 2006