id:A154042 - OEIS Search Results

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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.

+0
1

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; listen)

	OFFSET	`4,1`
	COMMENT	`Value 220 starts at n=13 and continues through at least n=60.`
	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: A166829 A005467 A029565 this_sequence A027809 A030537 A140919` `Adjacent sequences: A154039 A154040 A154041 this_sequence A154043 A154044 A154045`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Jan 04 2009`

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Last modified December 9 18:50 EST 2009. Contains 170568 sequences.

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