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 A125008 #2 Mar 31 2012 14:45:33 %S A125008 15,18,21,24,27,30,33,34,36,38,39,45,46,48,50,51,57,58,60,62,63,65,69, %T A125008 72,74,80,81,82,84,85,86,87,93,94,95,96,98,99,100,106,108,115,118,122, %U A125008 125,132,134,140,142,144,145,146,154,155,156,158,160,166,168,178,185 %N A125008 Numbers n for which nontrivial positive magic squares of exactly one order with magic sum n exist. For a definition of nontrivial positive magic squares, see A125005. %C A125008 A125008 lists all values s such that A125005(s) = 1. %Y A125008 Cf. A125005, A125006, A125007, A125009, A125010, A125011, A125012, A125013, A125014, A125015, A125016, A125017. %K A125008 easy,nonn %O A125008 1,1 %A A125008 _Jens Voß_, Nov 15 2006