A197678 Number of nX7 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

25, 361, 8930, 153715, 2871646, 51167876, 924904506, 16683567785, 302284521370, 5474405589906, 99183749443489, 1797437230322126, 32577752904902204, 590500270236515512, 10703710573822288345, 194025178417426634201

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 7 of A197679

Links

R. H. Hardin, Table of n, a(n) for n = 1..149

Example

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

Crossrefs

Sequence in context: A306083 A077512 A261972 * A197536 A045622 A130052

Adjacent sequences: A197675 A197676 A197677 * A197679 A197680 A197681

Keyword

nonn

Author

R. H. Hardin Oct 17 2011

Status

approved