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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
0
13, 22656, 12205368, 9560464068, 6409594156632
OFFSET
1,1
COMMENTS
Column 5 of A185409
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
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 26 2011
STATUS
approved