A302947 - OEIS

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A302947

Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

0, 3, 86, 6531, 2104533, 2766909379, 13578993819785, 252836915021232264, 18036285050227905448214, 4921162186957679442128426852 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	COMMENTS	`Diagonal of A302953.`
	LINKS	`Table of n, a(n) for n=1..10.`
	EXAMPLE	`Some solutions for n=5` `..0..0..0..0..0. .0..0..0..0..0. .0..0..0..1..0. .0..0..0..0..0` `..0..0..0..0..0. .0..0..1..0..0. .0..1..0..0..1. .0..0..1..1..1` `..0..1..1..1..1. .0..0..0..1..1. .0..0..1..0..1. .0..0..0..1..0` `..1..1..0..1..1. .0..0..0..0..1. .0..0..0..1..0. .0..1..0..0..0` `..1..0..1..0..0. .1..1..0..1..0. .1..1..1..1..1. .1..0..1..0..0`
	CROSSREFS	`Cf. A302953.` `Sequence in context: A292830 A185142 A279020 * A326948 A159053 A172494` `Adjacent sequences: A302944 A302945 A302946 * A302948 A302949 A302950`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin, Apr 16 2018`
	STATUS	`approved`

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Last modified March 5 04:24 EST 2021. Contains 341816 sequences. (Running on oeis4.)