A156506 - OEIS

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A156506

Number of nXn arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 41.

2, 4, 108, 194, 11736, 89724, 68108540, 1149707144, 4558233650072 (list; graph; refs; listen; history; internal format)

	OFFSET	`2,1`
	CROSSREFS	`Sequence in context: A104050 A000965 A018449 * A018455 A018463 A132497` `Adjacent sequences: A156503 A156504 A156505 * A156507 A156508 A156509`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net) Feb 09 2009`

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Last modified February 17 11:35 EST 2012. Contains 206011 sequences.