A193122 - OEIS

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A193122

Number of nXn symmetric 0..5 arrays with each element equal to the sum mod 6 of two of its horizontal and vertical neighbors

0, 3, 39, 1881, 462153, 536702346, 2300614078203 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	LINKS	`Table of n, a(n) for n=1..7.`
	EXAMPLE	`Some solutions for 4X4` `..0..0..5..0....2..4..2..3....2..1..2..4....4..2..0..0....2..4..5..4` `..0..0..5..1....4..2..5..1....1..5..4..2....2..2..0..0....4..2..1..5` `..5..5..0..1....2..5..3..4....2..4..1..3....0..0..0..0....5..1..0..0` `..0..1..1..2....3..1..4..2....4..2..3..0....0..0..0..0....4..5..0..0`
	CROSSREFS	`Sequence in context: A082159 A187536 A084881 * A015017 A210921 A210925` `Adjacent sequences: A193119 A193120 A193121 * A193123 A193124 A193125`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Jul 16 2011`
	STATUS	`approved`

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Last modified May 25 00:41 EDT 2013. Contains 225631 sequences.