A299840 - OEIS

A299840

Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 8, 163, 8245, 1056001, 325878154, 250915415042, 482492497564135, 2293606110081453800 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	COMMENTS	`Diagonal of A299844.`
	LINKS	`Table of n, a(n) for n=1..9.`
	EXAMPLE	`Some solutions for n=5` `..0..0..0..0..1. .0..0..0..0..0. .0..0..0..0..1. .0..0..0..0..1` `..0..1..0..0..0. .1..1..1..1..1. .1..1..1..1..0. .1..1..1..0..1` `..1..1..1..1..1. .0..1..0..0..1. .0..1..0..0..0. .0..0..0..0..1` `..1..0..0..0..0. .0..0..1..0..0. .0..0..1..1..1. .0..1..1..1..0` `..0..0..1..0..0. .0..1..1..0..1. .0..1..1..0..0. .0..0..1..0..1`
	CROSSREFS	`Cf. A299844.` `Sequence in context: A224899 A281830 A299075 * A353777 A230916 A221078` `Adjacent sequences: A299837 A299838 A299839 * A299841 A299842 A299843`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin, Feb 20 2018`
	STATUS	`approved`

Last modified March 21 14:15 EDT 2023. Contains 361408 sequences. (Running on oeis4.)