A299873 - OEIS

A299873

Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 7, 20, 125, 3068, 54005, 2714797, 213883244, 29310012663 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	COMMENTS	`Diagonal of A299879.`
	LINKS	`Table of n, a(n) for n=1..9.`
	EXAMPLE	`Some solutions for n=5` `..0..1..0..1..0. .0..0..1..0..1. .0..1..1..1..0. .0..1..0..1..1` `..1..1..0..0..0. .1..0..1..0..1. .0..1..0..1..0. .0..0..1..0..0` `..1..1..0..0..0. .1..1..1..1..0. .1..1..0..1..1. .0..0..1..1..1` `..1..1..0..0..1. .0..0..0..1..0. .0..0..0..0..0. .1..0..0..0..1` `..1..0..1..0..1. .0..1..0..1..1. .0..1..0..0..1. .1..1..0..0..0`
	CROSSREFS	`Cf. A299879.` `Sequence in context: A299346 A009370 A299091 * A009372 A051102 A299009` `Adjacent sequences: A299870 A299871 A299872 * A299874 A299875 A299876`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin, Feb 21 2018`
	STATUS	`approved`

Last modified August 10 11:03 EDT 2022. Contains 356039 sequences. (Running on oeis4.)