A185408 1/7 the number of nX5 0..6 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors

13, 22656, 12205368, 9560464068, 6409594156632

Offset

1,1

Comments

Column 5 of A185409

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for 3X5 with a(1,1)=0
..0..0..1..0..1....0..0..0..5..5....0..0..0..6..6....0..0..2..2..4
..0..0..1..0..1....0..1..1..3..0....0..1..1..4..4....0..1..1..6..4
..4..4..2..2..2....0..0..0..3..0....3..3..3..4..4....3..3..1..6..4

Crossrefs

Sequence in context: A098562 A176183 A241879 * A123921 A145716 A124990

Adjacent sequences: A185405 A185406 A185407 * A185409 A185410 A185411

Keyword

nonn

Author

R. H. Hardin Jan 26 2011

Status

approved