A302361 - OEIS

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A302361

Number of n X n 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

1, 2, 31, 77, 6580, 330505, 188443738, 169314399506, 675015247638492 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	COMMENTS	`Diagonal of A302367.`
	LINKS	`Table of n, a(n) for n=1..9.`
	EXAMPLE	`Some solutions for n=5` `..0..1..1..0..0. .0..1..1..0..0. .0..0..0..0..0. .0..0..1..1..0` `..1..1..0..0..1. .0..1..1..0..0. .1..0..1..0..0. .0..0..1..1..1` `..0..1..0..0..0. .1..1..1..0..1. .0..0..1..0..1. .0..0..1..1..0` `..1..1..1..0..1. .0..1..1..0..0. .0..0..1..0..0. .1..0..0..1..1` `..1..1..1..0..1. .1..1..0..0..1. .1..0..0..0..0. .0..0..1..1..0`
	CROSSREFS	`Cf. A302367.` `Sequence in context: A105757 A091252 A031920 * A175446 A054207 A104095` `Adjacent sequences: A302358 A302359 A302360 * A302362 A302363 A302364`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin, Apr 06 2018`
	STATUS	`approved`

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Last modified March 27 20:39 EDT 2023. Contains 361575 sequences. (Running on oeis4.)