A156488 - OEIS

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A156488

Number of nXn arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to 28.

6, 0, 78, 163, 58704, 590400, 202480300, 9256081380, 4014312232560 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`4,1`
	LINKS	`Table of n, a(n) for n=4..12.`
	CROSSREFS	`Sequence in context: A191688 A051767 A199044 * A057399 A145223 A219948` `Adjacent sequences: A156485 A156486 A156487 * A156489 A156490 A156491`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Feb 09 2009`
	STATUS	`approved`

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Last modified May 25 12:28 EDT 2013. Contains 225647 sequences.