id:A153899 - 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 3 X 3 X 3 subtriangle.

+0
1

1, 2, 1, 1, 3, 4, 6, 13, 17, 34, 101, 146, 325, 1195, 2277, 6460, 27376, 61961, 214755, 1116386, 3024411, 12485340, 79544755, 263062079, 1324332721, 10146383904, 40752385354, 249319033030, 2314746073775, 11234416498141, 83071107149999 (list; graph; listen)

	OFFSET	`0,2`
	CROSSREFS	`Sequence in context: A100529 A124424 A057044 this_sequence A068098 A135722 A049513` `Adjacent sequences: A153896 A153897 A153898 this_sequence A153900 A153901 A153902`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Jan 03 2009`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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