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 A182274 #12 Dec 30 2012 02:45:39 %S A182274 1,3,6,31,8,10,4,5,40,9,7,2,22,27,90,13,18,81,36,310,45,400,97,222,72, %T A182274 79,722,227,272,279,727,900,100,101,88,104,54,540,109,790,131,313,63, %U A182274 136,318,181,363,188,810,401,813,631,818,881,888,1000,404,545,409 %N A182274 Starting with 1, the smallest number not yet in the sequence such that the sum of every pair of adjacent digits in the sequence sum to a square number. %K A182274 nonn,base,easy %O A182274 1,2 %A A182274 _Jim Nastos_, Apr 22 2012