id:A154095 - OEIS Search Results

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Number of planar triangular n X n X n nonnegative integer grids symmetric both under 120 degree rotation and reflection with every similarly oriented 5 X 5 X 5 subtriangle summing to 15.

+0
1

34, 71, 166, 99, 63, 160, 77, 49, 77, 38, 24, 64, 20, 26, 24, 20, 21, 32, 18, 20 (list; graph; listen)

	OFFSET	`5,1`
	EXAMPLE	`Maximal zeros solution for n=20` `.....................3` `....................3.3` `...................0.1.0` `..................0.0.0.0` `.................0.1.3.1.0` `................0.0.3.3.0.0` `...............3.1.0.1.0.1.3` `..............3.3.0.0.0.0.3.3` `.............0.1.0.1.3.1.0.1.0` `............0.0.0.0.3.3.0.0.0.0` `...........0.1.3.1.0.1.0.1.3.1.0` `..........0.0.3.3.0.0.0.0.3.3.0.0` `.........3.1.0.1.0.1.3.1.0.1.0.1.3` `........3.3.0.0.0.0.3.3.0.0.0.0.3.3` `.......0.1.0.1.3.1.0.1.0.1.3.1.0.1.0` `......0.0.0.0.3.3.0.0.0.0.3.3.0.0.0.0` `.....0.1.3.1.0.1.0.1.3.1.0.1.0.1.3.1.0` `....0.0.3.3.0.0.0.0.3.3.0.0.0.0.3.3.0.0` `...3.1.0.1.0.1.3.1.0.1.0.1.3.1.0.1.0.1.3` `..3.3.0.0.0.0.3.3.0.0.0.0.3.3.0.0.0.0.3.3`
	CROSSREFS	`Sequence in context: A044517 A063333 A079863 this_sequence A063533 A118619 A066944` `Adjacent sequences: A154092 A154093 A154094 this_sequence A154096 A154097 A154098`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Jan 04 2009`

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

AT&T Labs Research