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A156499 Number of n X n arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to 36. 0

%I #4 Dec 18 2015 18:17:17

%S 1,0,0,7,15,150,1830,136182,3730237,747469740,63910429200

%N Number of n X n arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to 36.

%K nonn

%O 1,4

%A _R. H. Hardin_ Feb 09 2009

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Last modified April 13 15:02 EDT 2024. Contains 371644 sequences. (Running on oeis4.)