A193611 - OEIS

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A193611

Number of nXn symmetric 0..4 arrays with no element equal to the sum mod 5 of all its horizontal and vertical neighbors

4, 64, 4096, 1048580, 1073745920, 4398046511104, 72057594037927936 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	LINKS	`Table of n, a(n) for n=1..7.`
	EXAMPLE	`Some solutions for 4X4` `..1..0..4..3....1..0..3..3....1..0..2..2....0..1..4..4....0..1..3..4` `..0..2..0..3....0..2..3..3....0..4..3..1....1..1..1..1....1..0..1..0` `..4..0..0..4....3..3..1..4....2..3..3..3....4..1..4..3....3..1..1..4` `..3..3..4..0....3..3..4..1....2..1..3..2....4..1..3..4....4..0..4..4`
	CROSSREFS	`Sequence in context: A053718 A053773 A053763 * A193755 A194501 A053923` `Adjacent sequences: A193608 A193609 A193610 * A193612 A193613 A193614`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Jul 31 2011`
	STATUS	`approved`

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Last modified May 19 04:51 EDT 2013. Contains 225428 sequences.