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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
88, 223176, 965933960, 4489601294080, 17024968617729600, 46153277154525398944, 81793715658361957586560, 88458274598979298245766144, 56041133859159452089225510480, 20683461264345734698581425659800 (list; graph; refs; listen; history; internal format)
OFFSET

3,1

CROSSREFS

Sequence in context: A157460 A093244 A079036 * A093222 A114922 A036951

Adjacent sequences:  A159417 A159418 A159419 * A159421 A159422 A159423

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Apr 11 2009

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Last modified February 16 17:48 EST 2012. Contains 205939 sequences.