A217230 - OEIS

A217230

Number of triangular nXnXn arrays of occupancy after each element moves to some neighbor but without 2-loops and with no occupancy greater than 4.

0, 1, 47, 5167, 1950380, 2709368919 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,3`
	COMMENTS	`Column 4 of A217232.`
	LINKS	`Table of n, a(n) for n=1..6.`
	EXAMPLE	`Some solutions for n=4` `.....1........0........0........0........0........0........0........1` `....2.1......1.1......2.2......2.0......1.1......1.0......0.2......1.2` `...2.0.1....2.1.0....0.2.3....1.2.0....0.2.0....0.4.1....3.1.1....1.0.1` `..0.2.1.0..0.3.2.0..0.1.0.0..0.3.1.1..0.3.2.1..1.2.1.0..1.1.0.1..1.2.0.1`
	CROSSREFS	`Sequence in context: A334180 A194617 A217229 * A217231 A141797 A101629` `Adjacent sequences: A217227 A217228 A217229 * A217231 A217232 A217233`
	KEYWORD	`nonn,hard,more`
	AUTHOR	`R. H. Hardin, Sep 28 2012`
	STATUS	`approved`

Last modified May 25 21:44 EDT 2022. Contains 354071 sequences. (Running on oeis4.)