A154042 - OEIS

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A154042

Number of planar triangular n X n X n nonnegative integer grids with every similarly oriented 4 X 4 X 4 subtriangle summing to 4.

715, 3278, 7090, 8188, 5593, 4377, 1618, 601, 228, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`4,1`
	COMMENTS	`Value 220 starts at n=13 and continues through at least n=60.`
	LINKS	`Table of n, a(n) for n=4..55.`
	EXAMPLE	`Maximal zeros solution for n=13` `..............0` `.............0.0` `............0.0.2` `...........0.2.0.0` `..........2.0.0.0.0` `.........0.0.0.0.2.0` `........0.0.0.2.0.0.0` `.......0.0.2.0.0.0.0.2` `......0.2.0.0.0.0.2.0.0` `.....2.0.0.0.0.2.0.0.0.0` `....0.0.0.0.2.0.0.0.0.2.0` `...0.0.0.2.0.0.0.0.2.0.0.0` `..0.0.2.0.0.0.0.2.0.0.0.0.2`
	CROSSREFS	`Sequence in context: A214186 A255788 A029565 * A027809 A222912 A266107` `Adjacent sequences: A154039 A154040 A154041 * A154043 A154044 A154045`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Jan 04 2009`
	STATUS	`approved`

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Last modified March 21 05:29 EDT 2023. Contains 361392 sequences. (Running on oeis4.)