A156490 - OEIS

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A156490

Number of nXn arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 29.

2, 0, 86, 38, 6888, 50136, 13485160, 436323840, 284466859232, 19181871809320 (list; graph; refs; listen; history; internal format)

	OFFSET	`2,1`
	CROSSREFS	`Sequence in context: A012451 A012447 A136558 * A136559 A009740 A132860` `Adjacent sequences: A156487 A156488 A156489 * A156491 A156492 A156493`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net) Feb 09 2009`

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Last modified February 15 20:24 EST 2012. Contains 205852 sequences.