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A203441 Number of nX6 0..7 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors 0
1, 21988, 168492336, 482229769194, 1163067191357930 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 6 of A203443
LINKS
EXAMPLE
Some solutions for n=5
..6..6..4..2..5..5....4..4..1..2..2..0....7..7..6..6..5..1....2..6..7..7..4..0
..6..6..7..7..5..5....4..4..0..7..7..1....7..7..0..6..5..4....2..6..7..7..4..0
..6..0..7..7..1..4....2..0..3..7..7..4....0..1..3..6..3..4....2..6..4..3..4..0
..6..3..5..7..7..4....4..4..3..6..7..7....4..4..6..6..6..4....4..6..6..7..7..4
..6..6..6..7..7..2....4..4..0..2..7..7....4..4..6..6..6..0....4..4..4..7..7..4
CROSSREFS
Sequence in context: A250569 A109689 A209733 * A217533 A045133 A049535
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 01 2012
STATUS
approved

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Last modified March 1 12:27 EST 2024. Contains 370433 sequences. (Running on oeis4.)