id:A154054 - OEIS Search Results

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Number of planar triangular n X n X n nonnegative integer grids symmetric under 120 degree rotation with every similarly oriented 3 X 3 X 3 subtriangle summing to 6.

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1

3, 30, 17, 20, 88, 16, 18, 110, 28, 14, 82, 12, 28, 76, 12, 12, 86, 12, 12, 76, 28, 12, 76, 12, 28, 76, 12, 12, 86, 12, 12, 76, 28, 12, 76, 12, 28, 76, 12, 12, 86, 12, 12, 76, 28, 12, 76, 12, 28, 76, 12, 12, 86, 12, 12, 76, 28, 12 (list; graph; listen)

	OFFSET	`3,1`
	COMMENT	`Pattern 12 28 76 12 12 86 12 12 76 28 12 76 starts at n=14 and continues through at least n=60.`
	EXAMPLE	`Maximal zeros solution for n=14` `...............2` `..............2.2` `.............0.0.0` `............0.2.2.0` `...........2.0.2.0.2` `..........2.2.0.0.2.2` `.........0.0.0.4.0.0.0` `........0.2.2.0.0.2.2.0` `.......2.0.2.0.2.0.2.0.2` `......2.2.0.0.2.2.0.0.2.2` `.....0.0.0.4.0.0.0.4.0.0.0` `....0.2.2.0.0.2.2.0.0.2.2.0` `...2.0.2.0.2.0.2.0.2.0.2.0.2` `..2.2.0.0.2.2.0.0.2.2.0.0.2.2`
	CROSSREFS	`Sequence in context: A078242 A108739 A072973 this_sequence A118219 A077679 A045863` `Adjacent sequences: A154051 A154052 A154053 this_sequence A154055 A154056 A154057`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Jan 04 2009`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

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