A230618 Number of 6Xn 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero

0, 0, 0, 44916, 4899200, 570014364, 62312057642, 6859445695566, 753992937156292, 82884961506928674, 9111820198577944474, 1001675666375464430008, 110115929289424892845128, 12105240130837251432416920

Offset

1,4

Comments

Row 6 of A230614

Links

R. H. Hardin, Table of n, a(n) for n = 1..124

Example

Some solutions for n=4
..0..1..2..1....0..1..2..0....0..1..2..0....0..1..2..0....0..1..1..2
..2..0..2..0....0..2..1..0....0..1..1..2....0..1..1..2....2..0..0..2
..1..2..1..0....2..0..2..1....1..2..0..1....1..2..0..1....0..1..2..0
..0..1..2..1....2..0..2..1....1..0..2..1....1..0..2..2....0..1..1..0
..1..2..0..1....1..2..0..2....1..2..0..0....0..1..0..0....0..2..1..1
..1..0..2..1....1..0..1..0....1..2..1..0....1..2..1..0....2..0..2..1

Crossrefs

Sequence in context: A197614 A202987 A183590 * A185574 A209783 A295467

Adjacent sequences: A230615 A230616 A230617 * A230619 A230620 A230621

Keyword

nonn

Author

R. H. Hardin, Oct 25 2013

Status

approved