A156468 - OEIS

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A156468

Number of nXn arrays of squares of integers, symmetric about main diagonal, with all rows summing to 18.

1, 8, 114, 3704, 285470, 46859304, 17604991124, 15033533213232, 35207864619957092 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`2,2`
	LINKS	`Table of n, a(n) for n=2..10.`
	CROSSREFS	`Sequence in context: A222520 A220635 A113670 * A220575 A214695 A056988` `Adjacent sequences: A156465 A156466 A156467 * A156469 A156470 A156471`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Feb 09 2009`
	STATUS	`approved`

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Last modified June 20 02:19 EDT 2013. Contains 226416 sequences.