A164745 - OEIS

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A164745

Number of nXnXn triangular 1..3 arrays with all 1s connected, all 2s connected, all 3s connected, 1 at the top vertex, 2 at the lower left, and 3 at the lower right, and no value having more than 3 identical values adjacent

1, 17, 105, 570, 3634, 30894, 360936 (list; graph; refs; listen; history; internal format)

	OFFSET	`2,2`
	EXAMPLE	`Some solutions for n=4` `......1..........1..........1..........1..........1..........1..........1....` `.....2.1........1.3........2.2........1.3........1.1........3.3........1.1...` `....2.1.1......1.1.3......2.3.2......3.1.3......3.3.3......3.2.3......2.2.3..` `...2.1.3.3....2.3.3.3....2.3.3.3....2.3.3.3....2.2.3.3....2.2.2.3....2.2.3.3.` `------` `......1..........1..........1..........1..........1..........1..........1....` `.....3.1........1.1........2.2........3.1........3.1........1.2........2.1...` `....3.1.3......2.2.1......2.3.3......3.1.1......3.3.3......2.2.3......2.2.1..` `...2.3.3.3....2.3.3.3....2.2.2.3....2.3.3.3....2.2.2.3....2.2.3.3....2.1.1.3.`
	CROSSREFS	`Sequence in context: A095785 A194131 A194475 * A121823 A142321 A007682` `Adjacent sequences: A164742 A164743 A164744 * A164746 A164747 A164748`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net) Aug 24 2009`

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Last modified February 16 23:45 EST 2012. Contains 205978 sequences.