id:A155249 - OEIS Search Results

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

+0
1

1, 2, 4, 8, 14, 47, 195, 837, 3369, 18578, 136739, 1165320, 10402584, 111016225, 1486854375, 24007190141, 439055546197, 9360979774817, 239960578837701, 7384548591700592, 266113431327167571 (list; graph; listen)

	OFFSET	`2,2`
	EXAMPLE	`Maximal 8 X 8 X 8 example` `..........1` `.........1.1` `........1.1.1` `.......0.0.0.0` `......0.1.1.1.0` `.....1.0.1.1.0.1` `....1.1.0.1.0.1.1` `...1.1.1.0.0.1.1.1`
	CROSSREFS	`Sequence in context: A130711 A093483 A028398 this_sequence A118884 A118890 A118869` `Adjacent sequences: A155246 A155247 A155248 this_sequence A155250 A155251 A155252`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Jan 22 2009`

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Last modified March 17 15:31 EDT 2010. Contains 173524 sequences.

AT&T Labs Research