A156462 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A156462

Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 15.

22, 0, 3200, 2952, 1651208, 6328576, 2727888448, 31390349120, 15449498784320, 512365063156800 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`4,1`
	LINKS	`Table of n, a(n) for n=4..13.`
	CROSSREFS	`Sequence in context: A225343 A252670 A297813 * A040488 A040489 A040490` `Adjacent sequences: A156459 A156460 A156461 * A156463 A156464 A156465`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Feb 09 2009`
	STATUS	`approved`

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 4 20:58 EST 2023. Contains 360082 sequences. (Running on oeis4.)