A156499 - OEIS

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A156499

Number of nXn arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to 36.

1, 0, 0, 7, 15, 150, 1830, 136182, 3730237, 747469740, 63910429200 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,4`
	CROSSREFS	`Sequence in context: A032004 A032018 A068366 * A137881 A042725 A041096` `Adjacent sequences: A156496 A156497 A156498 * A156500 A156501 A156502`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net) Feb 09 2009`

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Last modified February 14 11:36 EST 2012. Contains 205623 sequences.