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A159420
Number of nXn arrays of squares of integers with every (n-1)X(n-1) subblock summing to 27
+0
1
88, 223176, 965933960, 4489601294080, 17024968617729600, 46153277154525398944, 81793715658361957586560, 88458274598979298245766144, 56041133859159452089225510480, 20683461264345734698581425659800
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.
AT&T Labs Research
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