A156498 - OEIS

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A156498

Number of nXn arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 36.

1, 2, 4, 51, 275, 16008, 175374, 67060718, 1866384501, 2036398653264 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A032019 A181179 A175814 * A085325 A082661 A205616` `Adjacent sequences: A156495 A156496 A156497 * A156499 A156500 A156501`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net) Feb 09 2009`

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Last modified February 15 09:15 EST 2012. Contains 205753 sequences.