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A125009 Numbers n for which nontrivial positive magic squares of exactly 2 different orders with magic sum n exist. For a definition of nontrivial positive magic squares, see A125005. 13

%I

%S 42,54,66,70,75,78,102,105,110,111,114,117,120,123,126,129,130,138,

%T 141,147,153,159,162,170,171,174,175,177,180,182,183,186,190,198,201,

%U 207,213,219,222,230,234,237,238,240,243,245,246,249,250,252,258,260,261

%N Numbers n for which nontrivial positive magic squares of exactly 2 different orders with magic sum n exist. For a definition of nontrivial positive magic squares, see A125005.

%C A125009 lists all values s such that A125005(s) = 2.

%Y Cf. A125005, A125006, A125007, A125008, A125010, A125011, A125012, A125013, A125014, A125015, A125016, A125017.

%K easy,nonn

%O 1,1

%A _Jens Voß_, Nov 15 2006

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Last modified May 9 19:47 EDT 2021. Contains 343746 sequences. (Running on oeis4.)