id:A166199 - OEIS Search Results

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Number of nXnXn triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 4

+0
1

1, 5, 2, 4, 25, 64, 249, 2376, 9030, 76249, 1598732, 10091912, 165533393, 6511049130, 90909213960, 2908246084285, 219536965840260, 5801006454694383 (list; graph; listen)

	OFFSET	`0,2`
	EXAMPLE	`Some solutions for n=4` `.....0........1........1........1........1........2........2........3...` `....0.0......0.0......0.0......0.1......0.0......1.0......0.0......0.0..` `...0.3.0....0.2.0....0.3.0....1.1.0....0.0.0....0.0.1....0.0.0....0.1.0.` `..0.0.0.0..1.0.0.1..1.0.0.1..1.0.1.1..1.0.0.1..2.1.0.2..2.0.0.2..3.0.0.3` `------` `.....1........0........4........1........1........2........2........0...` `....1.0......0.0......0.0......1.0......0.1......0.1......0.0......0.1..` `...0.1.1....0.1.0....0.0.0....0.0.1....1.0.0....1.0.0....0.1.0....1.0.0.` `..1.1.0.1..0.0.0.0..4.0.0.4..1.1.0.1..1.0.1.1..2.0.1.2..2.0.0.2..0.0.1.0`
	CROSSREFS	`Sequence in context: A020800 A088507 A050001 this_sequence A008566 A111129 A059688` `Adjacent sequences: A166196 A166197 A166198 this_sequence A166200 A166201 A166202`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Oct 09 2009`

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Last modified December 1 19:22 EST 2009. Contains 167811 sequences.

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