A197620 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,3,1,1,1 for x=0,1,2,3,4

0, 8, 27, 242, 1904, 8593, 59395, 330625, 1878470, 11243393, 68055184, 407535370, 2426988031, 14447481171, 86405786370, 514988469806, 3074520903444, 18359513091808, 109588403253082, 654079304825368, 3904370864134171

Offset

1,2

Comments

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

Column 5 of A197623

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
..1..2..0..1..2....1..0..1..3..1....0..1..3..1..0....2..1..3..1..0
..3..1..2..3..1....3..1..4..1..1....2..1..1..4..1....1..4..1..1..2
..1..4..1..1..2....1..4..1..1..3....1..3..2..1..3....3..1..2..3..1
..0..1..3..1..0....2..1..3..1..1....2..1..0..2..1....1..2..0..1..0

Crossrefs

Sequence in context: A067813 A304769 A118720 * A029786 A029792 A112993

Adjacent sequences: A197617 A197618 A197619 * A197621 A197622 A197623

Keyword

nonn

Author

R. H. Hardin Oct 16 2011

Status

approved