A221138 - OEIS

A221138

Number of n X 7 arrays of occupancy after each element moves to some horizontal or vertical neighbor, with no occupancy greater than 2.

32, 57121, 58132316, 75512292025, 86907967843320, 106295637843093924 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Column 7 of A221139.`
	LINKS	`Table of n, a(n) for n=1..6.`
	EXAMPLE	`Some solutions for n=3` `..0..1..2..2..1..1..1....0..1..2..2..1..1..0....0..1..1..2..1..1..0` `..0..1..2..2..1..2..1....0..1..1..2..2..2..0....0..1..1..2..2..1..0` `..0..1..1..0..0..2..0....0..1..2..1..0..2..0....0..1..2..2..2..1..0`
	CROSSREFS	`Cf. A221139.` `Sequence in context: A159396 A221086 A054374 * A017009 A176030 A034245` `Adjacent sequences: A221135 A221136 A221137 * A221139 A221140 A221141`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Jan 02 2013`
	STATUS	`approved`

Last modified July 2 21:48 EDT 2022. Contains 355029 sequences. (Running on oeis4.)