A197748 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,0,1,0 for x=0,1,2,3,4

8, 186, 4086, 64832, 1345639, 26488736, 517762136, 10253557106, 201303354308, 3960281174841, 78026833052921, 1535648544087160, 30232523451117831, 595202431920865248, 11716746352661448795, 230663246714597008476

Offset

1,1

Comments

Every 0 is next to 0 3's, every 1 is next to 1 3's, every 2 is next to 2 0's, every 3 is next to 3 1's, every 4 is next to 4 0's

Column 6 of A197750

Links

R. H. Hardin, Table of n, a(n) for n = 1..209

Example

Some solutions containing all values 0 to 4 for n=4
..2..0..0..0..0..0....1..3..1..0..0..0....1..3..1..2..0..2....2..0..2..2..0..0
..0..4..0..4..0..0....0..1..2..0..0..0....0..1..0..0..4..0....0..4..0..0..0..0
..0..0..1..0..0..0....0..1..0..0..4..0....0..0..4..0..0..0....0..0..0..2..1..0
..0..1..3..1..0..0....1..3..1..2..0..2....0..0..0..0..0..0....0..0..2..1..3..1

Crossrefs

Sequence in context: A227584 A197894 A198011 * A198153 A197233 A163701

Adjacent sequences: A197745 A197746 A197747 * A197749 A197750 A197751

Keyword

nonn

Author

R. H. Hardin Oct 17 2011

Status

approved