A197677 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,1,0,1 for x=0,1,2,3,4

16, 160, 2557, 29190, 358209, 4268977, 51167876, 612121676, 7361707007, 88656931195, 1068147837085, 12872396820775, 155149962503924, 1870214789373352, 22545546614910072, 271799896014413918

Offset

1,1

Comments

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

Column 6 of A197679

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A079768 A053410 A225591 * A197535 A204297 A000811

Adjacent sequences: A197674 A197675 A197676 * A197678 A197679 A197680

Keyword

nonn

Author

R. H. Hardin Oct 17 2011

Status

approved