A156520 - OEIS

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A156520

Number of nXn arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 64.

1, 2, 2, 7, 19, 50198, 788009, 1184902962, 55064648562 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A049955 A184714 A156464 * A069101 A138802 A047003` `Adjacent sequences: A156517 A156518 A156519 * A156521 A156522 A156523`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net) Feb 09 2009`

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.