id:A154087 - 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 12.

+0
1

22, 40, 80, 53, 27, 67, 30, 17, 28, 9, 10, 6, 9, 9, 9, 9, 6, 9, 9, 9, 9, 6, 9, 9, 9, 9, 6, 9, 9, 9, 9, 6, 9, 9, 9, 9, 6, 9, 9, 9, 9, 6, 9, 9, 9, 9, 6 (list; graph; listen)

	OFFSET	`5,1`
	COMMENT	`Pattern 6 9 9 9 9 starts at n=16 and continues through at least n=51.`
	EXAMPLE	`Maximal zeros solution for n=16` `.................6` `................0.0` `...............0.0.0` `..............0.2.2.0` `.............0.0.2.0.0` `............4.1.0.0.1.4` `...........0.1.0.2.0.1.0` `..........0.0.0.2.2.0.0.0` `.........0.2.2.0.0.0.2.2.0` `........0.0.2.0.1.1.0.2.0.0` `.......4.1.0.0.1.2.1.0.0.1.4` `......0.1.0.2.0.1.1.0.2.0.1.0` `.....0.0.0.2.2.0.0.0.2.2.0.0.0` `....0.2.2.0.0.0.2.2.0.0.0.2.2.0` `...0.0.2.0.1.1.0.2.0.1.1.0.2.0.0` `..6.0.0.0.0.4.0.0.0.0.4.0.0.0.0.6`
	CROSSREFS	`Sequence in context: A116658 A026061 A138040 this_sequence A063327 A066957 A118602` `Adjacent sequences: A154084 A154085 A154086 this_sequence A154088 A154089 A154090`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Jan 04 2009`

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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.

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