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A203459 Number of nX7 0..2 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors 1
1, 686, 237999, 44974778, 9441977403, 2078403848722, 449985495293440, 97229907706009899, 21076066091178687992, 4568715563183005120358, 989906518295763028607606, 214487030281717487899262669 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 7 of A203460
LINKS
EXAMPLE
Some solutions for n=5
..2..2..2..0..2..2..2....1..1..0..1..1..0..0....0..2..2..1..2..2..1
..2..0..2..1..2..0..2....1..1..1..2..2..2..2....2..2..2..2..2..2..2
..2..1..2..2..2..2..2....1..1..1..2..2..1..2....2..0..1..2..0..2..2
..2..2..2..1..2..1..2....0..1..1..0..2..0..2....2..1..0..2..0..2..2
..2..2..1..0..2..2..2....0..1..1..0..2..2..2....2..2..2..2..1..1..0
CROSSREFS
Sequence in context: A232199 A222751 A234817 * A101944 A045150 A296811
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 02 2012
STATUS
approved

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Last modified March 29 11:14 EDT 2024. Contains 371278 sequences. (Running on oeis4.)