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A146479 Number of nXn arrays of squares of integers summing to 12 with every element equal to at least one neighbor. 1
0, 78, 2915, 413255, 27664684, 443065607, 3534941139, 18915573187, 78095787882, 268541796601 (list; graph; refs; listen; history; internal format)
OFFSET

2,2

CROSSREFS

Sequence in context: A036524 A140934 A133239 * A017794 A035734 A017741

Adjacent sequences:  A146476 A146477 A146478 * A146480 A146481 A146482

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Apr 14 2009

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Last modified February 15 13:35 EST 2012. Contains 205802 sequences.