id:A166176 - OEIS Search Results

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Number of nXnXn triangular nonnegative integer arrays with all sums of an element and its neighbors <= 4

+0
1

1, 5, 35, 232, 6052, 285850, 20417349, 3439249710, 1105607996796, 654788462119153, 783760670032822151 (list; graph; listen)

	OFFSET	`0,2`
	EXAMPLE	`Some solutions for n=4` `.....1........4........0........0........0........2........0........1...` `....0.0......0.0......2.0......0.3......0.1......0.1......1.0......1.0..` `...0.0.1....0.0.0....1.0.0....1.0.0....2.0.0....1.0.1....0.0.2....1.0.1.` `..2.0.0.3..1.2.1.0..1.0.1.3..3.0.0.1..1.0.1.1..3.0.0.0..3.0.0.1..2.0.1.0` `------` `.....2........0........1........1........2........0........1........1...` `....0.1......1.1......0.0......3.0......0.0......1.1......3.0......1.0..` `...0.0.0....0.0.0....2.1.0....0.0.0....0.0.0....1.0.0....0.0.0....1.0.0.` `..1.0.0.2..2.1.1.0..0.0.0.2..0.0.0.0..2.0.0.3..2.0.0.1..1.0.0.1..2.0.1.0`
	CROSSREFS	`Sequence in context: A038143 A024062 A002074 this_sequence A154780 A007995 A091928` `Adjacent sequences: A166173 A166174 A166175 this_sequence A166177 A166178 A166179`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Oct 09 2009`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.