A304466 - OEIS

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A304466

Number of n X n 0..1 arrays with every element unequal to 0, 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.

1, 8, 41, 322, 5063, 89071, 1802240, 101407827, 8813328376, 823379005870 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	COMMENTS	`Diagonal of A304472.`
	LINKS	`Table of n, a(n) for n=1..10.`
	EXAMPLE	`Some solutions for n=5` `..0..0..0..0..0. .0..1..1..1..1. .0..0..1..1..0. .0..1..1..1..1` `..0..0..0..0..0. .0..1..1..1..1. .0..1..1..0..0. .0..0..1..1..1` `..0..0..0..1..0. .0..1..1..1..1. .1..1..1..1..1. .1..1..1..1..1` `..0..0..0..1..1. .0..1..1..1..1. .1..1..0..1..1. .1..1..1..0..0` `..1..0..0..0..0. .0..1..1..1..0. .0..1..0..0..1. .1..1..1..1..0`
	CROSSREFS	`Cf. A304472.` `Sequence in context: A188209 A026953 A280068 * A228480 A067301 A295936` `Adjacent sequences: A304463 A304464 A304465 * A304467 A304468 A304469`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin, May 13 2018`
	STATUS	`approved`

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Last modified November 28 22:51 EST 2022. Contains 358421 sequences. (Running on oeis4.)