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 A125006 Numbers n for which nontrivial positive magic squares with magic sum n exist. For a definition of nontrivial positive magic squares, see A125005. 12
 15, 18, 21, 24, 27, 30, 33, 34, 36, 38, 39, 42, 45, 46, 48, 50, 51, 54, 57, 58, 60, 62, 63, 65, 66, 69, 70, 72, 74, 75, 78, 80, 81, 82, 84, 85, 86, 87, 90, 93, 94, 95, 96, 98, 99, 100, 102, 105, 106, 108, 110, 111, 114, 115, 117, 118, 120, 122, 123, 125, 126, 129, 130 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS This sequence lists all values s such that A125005(s) > 0. LINKS EXAMPLE a(1) = 15 because 15 is the smallest integer s for which a nontrivial positive magic square with magic sum s exists. CROSSREFS Cf. A125005, A125007, A125008, A125009, A125010, A125011, A125012, A125013, A125014, A125015, A125016, A125017. Sequence in context: A067757 A063779 A063781 * A125008 A290015 A274979 Adjacent sequences:  A125003 A125004 A125005 * A125007 A125008 A125009 KEYWORD easy,nonn AUTHOR Jens Voß, Nov 15 2006 STATUS approved

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Last modified February 22 11:33 EST 2020. Contains 332135 sequences. (Running on oeis4.)