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 A125007 #2 Mar 31 2012 14:45:33 %S A125007 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,16,17,19,20,22,23,25,26,28,29,31, %T A125007 32,35,37,40,41,43,44,47,49,52,53,55,56,59,61,64,67,68,71,73,76,77,79, %U A125007 83,88,89,91,92,97,101,103,104,107,109,112,113,116,119,121,124,127,128,131 %N A125007 Numbers n for which no nontrivial positive magic squares with magic sum n exist. For a definition of nontrivial positive magic squares, see A125005. %C A125007 A125007 lists all values s such that A125005(s) = 0. %e A125007 Since there exists a nontrivial positive magic square with magic sum 15, 15 is not a value of A125007. %Y A125007 Cf. A125005, A125006, A125008, A125009, A125010, A125011, A125012, A125013, A125014, A125015, A125016, A125017. %K A125007 easy,nonn %O A125007 1,3 %A A125007 _Jens Voß_, Nov 15 2006