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A203388
Number of nX7 0..6 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors
0
1, 86156, 1678700434, 10639041328647, 61265314914283103
OFFSET
1,2
COMMENTS
Column 7 of A203389
EXAMPLE
Some solutions for n=4
..4..4..2..2..0..4..4....4..4..3..3..0..4..4....0..5..5..5..4..5..5
..4..6..6..2..5..5..4....6..6..3..4..4..4..4....5..5..5..6..6..5..5
..4..6..6..3..5..5..2....6..6..3..4..5..5..4....5..0..4..6..6..5..3
..0..1..1..0..0..0..0....5..5..0..0..5..5..0....5..5..5..5..0..0..0
CROSSREFS
Sequence in context: A234805 A186065 A238309 * A206657 A231322 A237783
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 01 2012
STATUS
approved