A154060 - OEIS

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A154060

Number of planar triangular n X n X n nonnegative integer grids symmetric under 120 degree rotation with every similarly oriented 5 X 5 X 5 subtriangle summing to 6.

15, 48, 136, 132, 79, 180, 173, 60, 137, 52, 50, 22, 48, 48, 48, 48, 20, 48, 48, 48, 48, 20, 48, 48, 48, 48, 20, 48, 48, 48, 48, 20, 48, 48, 48, 48, 20, 48, 48, 48, 48, 20, 48, 48, 48, 48, 20, 48, 48 (list; graph; refs; listen; history; internal format)

	OFFSET	`5,1`
	COMMENTS	`Pattern 48 48 48 48 20 starts at n=17 and continues through at least n=53.`
	CROSSREFS	`Sequence in context: A000813 A156205 A065906 * A168305 A199899 A020257` `Adjacent sequences: A154057 A154058 A154059 * A154061 A154062 A154063`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net) Jan 04 2009`

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.