id:A156439 - OEIS Search Results

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Number of nXn arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to 5.

+0
1

2, 3, 0, 0, 480, 2400, 0, 0, 7574400, 66083040, 0, 0, 896812758240, 10058239033920, 0, 0, 374736233227188672, 5125335197750964000, 0, 0 (list; graph; listen)

	OFFSET	`4,1`
	CROSSREFS	`Sequence in context: A131360 A011311 A063890 this_sequence A087734 A073644 A123343` `Adjacent sequences: A156436 A156437 A156438 this_sequence A156440 A156441 A156442`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Feb 09 2009`

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Last modified December 5 08:23 EST 2009. Contains 170348 sequences.

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