id:A153910 - 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 no more than 2 ones in any 2 X 2 X 2 subtriangle.

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1, 2, 1, 2, 5, 6, 10, 46, 45, 144, 630, 1282, 3589, 31208, 54740, 306488, 2365846, 8422342, 41318120, 642228152, 1995977194, 19736350274, 269164334206, 1690170177698, 14635326322042, 402751016861848, 2213195936856480 (list; graph; listen)

	OFFSET	`0,2`
	CROSSREFS	`Sequence in context: A084309 A047991 A120898 this_sequence A052532 A006704 A006702` `Adjacent sequences: A153907 A153908 A153909 this_sequence A153911 A153912 A153913`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Jan 03 2009`

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.

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