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A195243

Number of lower triangles of an n X n 0..3 array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by two or less

4, 46, 1682, 190514, 67379894, 74236765958, 254948725307650, 2728873272983950594, 91038149737139587502854, 9466106148769015848820814134, 3067809430979519600024270636572850 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Column 3 of A195248`
	LINKS	`R. H. Hardin, Table of n, a(n) for n = 1..18`
	EXAMPLE	`Some solutions for n=5` `..1..........2..........1..........3..........0..........1..........0` `..0.2........2.1........0.2........1.1........2.1........1.3........2.1` `..2.0.2......2.0.0......2.1.3......1.1.2......0.2.2......3.3.1......0.2.2` `..0.0.1.3....2.1.1.2....0.2.1.3....3.2.1.1....2.1.1.0....3.1.1.3....2.1.1.0` `..0.1.2.3.3..1.2.2.1.0..2.1.3.3.3..2.1.2.2.3..1.0.0.1.2..2.3.2.2.1..1.0.0.1.2`
	CROSSREFS	`Sequence in context: A002077 A113096 A135078 * A269005 A107766 A065777` `Adjacent sequences: A195240 A195241 A195242 * A195244 A195245 A195246`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Sep 13 2011`
	STATUS	`approved`

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Last modified September 11 08:57 EDT 2024. Contains 375814 sequences. (Running on oeis4.)