id:A153896 - OEIS Search Results

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Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 1 one in any 2 X 2 X 2 subtriangle.

+0
1

1, 2, 1, 2, 6, 6, 12, 54, 68, 200, 1266, 2320, 9256, 81946, 206828, 1160264, 14343496, 50776328, 396238264, 6835424230, 33707147400, 367462965472, 8846443274706, 60917276216360, 926358873081664, 31121060447968362, 298982889913216056 (list; graph; listen)

	OFFSET	`0,2`
	CROSSREFS	`Sequence in context: A140835 A094965 A025277 this_sequence A074727 A059587 A070236` `Adjacent sequences: A153893 A153894 A153895 this_sequence A153897 A153898 A153899`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Jan 03 2009`

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Last modified December 5 20:25 EST 2009. Contains 170428 sequences.

AT&T Labs Research