A156521 - OEIS

This site is supported by donations to The OEIS Foundation.

A156521

Number of nXn arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to 64.

1, 0, 0, 3, 7, 132, 3039, 751770, 20902434, 14753635250 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,4`
	CROSSREFS	`Sequence in context: A128071 A079622 A005844 * A012636 A006031 A119958` `Adjacent sequences: A156518 A156519 A156520 * A156522 A156523 A156524`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net) Feb 09 2009`

Content is available under The OEIS End-User License Agreement .

Last modified February 15 03:59 EST 2012. Contains 205694 sequences.