A350612 - OEIS

A350612

Number of sparse solutions to the Xqueens problem on an n X n board.

0, 0, 0, 1320, 178584, 113260460, 146777600320 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,4`
	LINKS	`Table of n, a(n) for n=1..7.` `Don Knuth, Xqueens and Xqueenons, 2021.`
	CROSSREFS	`Cf. A350611-A350614.` `Sequence in context: A185464 A323802 A161586 * A013641 A295449 A092088` `Adjacent sequences: A350609 A350610 A350611 * A350613 A350614 A350615`
	KEYWORD	`nonn,more`
	AUTHOR	`Don Knuth, Jan 16 2022`
	STATUS	`approved`

Last modified May 23 14:15 EDT 2022. Contains 353975 sequences. (Running on oeis4.)