A155237 - OEIS

A155237

Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,0 4,0 polyhexes in any orientation on a planar nXnXn triangular grid.

1, 4, 10, 45, 176, 869, 4190, 28277, 212331, 2073991, 22977026, 311395472, 4817775687 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`4,2`
	LINKS	`Table of n, a(n) for n=4..16.`
	EXAMPLE	`Maximal 13 X 13 X 13 example` `...............1` `..............0.1` `.............1.0.1` `............1.0.0.1` `...........1.0.1.0.1` `..........1.0.0.1.0.0` `.........1.0.1.0.1.0.1` `........0.0.1.0.0.1.0.1` `.......1.0.1.0.0.0.1.0.1` `......1.0.1.0.0.0.0.0.0.1` `.....1.0.1.0.1.1.1.1.1.0.1` `....1.0.0.0.0.0.0.0.0.0.0.0` `...1.0.1.1.1.1.1.0.1.1.1.1.1`
	CROSSREFS	`Sequence in context: A155386 A155330 A155278 * A155223 A155219 A153985` `Adjacent sequences: A155234 A155235 A155236 * A155238 A155239 A155240`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Jan 22 2009`
	STATUS	`approved`

Last modified February 6 11:45 EST 2023. Contains 360104 sequences. (Running on oeis4.)