A299683 - OEIS

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A299683

Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 4, 15, 648, 23116, 5740433, 4582634341, 9172624830461, 66764212816377961 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	COMMENTS	`Diagonal of A299689.`
	LINKS	`Table of n, a(n) for n=1..9.`
	EXAMPLE	`Some solutions for n=5` `..0..0..1..1..0. .0..0..1..0..1. .0..1..1..0..0. .0..0..1..0..0` `..0..0..1..1..0. .0..0..0..0..0. .1..1..1..0..0. .0..0..1..0..0` `..1..1..0..0..0. .0..0..0..0..0. .1..1..0..1..1. .1..0..0..0..1` `..1..1..0..1..0. .1..0..1..1..0. .0..1..1..1..1. .0..0..1..0..0` `..0..0..0..0..1. .0..1..1..0..1. .0..1..1..1..0. .0..0..0..0..1`
	CROSSREFS	`Cf. A299689.` `Sequence in context: A000881 A109923 A006524 * A341598 A295231 A070037` `Adjacent sequences: A299680 A299681 A299682 * A299684 A299685 A299686`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin, Feb 16 2018`
	STATUS	`approved`

Last modified April 14 03:36 EDT 2021. Contains 342941 sequences. (Running on oeis4.)