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A203442 Number of nX7 0..7 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors 0
1, 186348, 6975234574, 79772073060022, 781112517644514067 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 7 of A203443
LINKS
EXAMPLE
Some solutions for n=5
..3..3..2..5..5..7..7....7..7..5..0..5..5..2....3..3..0..7..7..5..2
..3..7..7..5..2..7..7....7..7..5..7..7..5..4....4..4..7..7..7..5..2
..1..7..7..4..6..6..4....5..6..5..7..7..4..4....4..5..7..2..3..4..0
..7..7..4..2..6..3..4....2..7..7..6..5..5..5....0..5..7..0..4..7..7
..7..7..6..6..6..4..4....0..7..7..3..0..5..5....0..0..7..7..7..7..7
CROSSREFS
Sequence in context: A092013 A186878 A192103 * A216901 A253293 A253163
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 01 2012
STATUS
approved

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Last modified March 3 07:26 EST 2024. Contains 370499 sequences. (Running on oeis4.)