A197536 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,1,0,0 for x=0,1,2,3,4

25, 361, 14085, 423085, 14056707, 454280983, 14991391782, 493785636151, 16343961543732, 541269402906501, 17943273862788427, 595019891173209941, 19736497896904338854, 654726724059190203302, 21721092108797190824889

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 0's

Column 7 of A197537

Links

R. H. Hardin, Table of n, a(n) for n = 1..156

Example

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

Crossrefs

Sequence in context: A077512 A261972 A197678 * A045622 A130052 A059255

Adjacent sequences: A197533 A197534 A197535 * A197537 A197538 A197539

Keyword

nonn

Author

R. H. Hardin Oct 16 2011

Status

approved