id:A153984 - OEIS Search Results

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Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with every one adjacent to exactly 1 other one.

+0
1

1, 1, 1, 1, 1, 2, 3, 2, 6, 7, 11, 23, 54, 60, 238, 445, 901, 2706, 9076, 14494, 80321, 212453, 613603, 2681494, 12847248, 29154102, 230660451, 862931932, 3568146072, 22105400251, 150948368093, 488469303948, 5510650176739, 29467826406958 (list; graph; listen)

	OFFSET	`0,6`
	CROSSREFS	`Sequence in context: A077418 A005421 A158279 this_sequence A025502 A110777 A087454` `Adjacent sequences: A153981 A153982 A153983 this_sequence A153985 A153986 A153987`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Jan 04 2009`

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

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