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A202886
Number of nX5 0..2 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.
1
51, 13345, 2223723, 348151747, 56006562037, 9024909392725, 1452080571954205, 233641209300452607, 37595413242729744773, 6049464276674659581373, 973416350404566342317495, 156632059367518718442398187
OFFSET
1,1
LINKS
EXAMPLE
Some solutions for n=2
..2..2..1..2..2....1..0..0..2..2....1..2..2..1..0....1..1..1..2..0
..1..1..1..0..2....2..2..0..0..1....0..1..2..0..0....0..2..2..2..1
CROSSREFS
Column 5 of A202889.
Sequence in context: A206395 A160475 A241332 * A223059 A208861 A208869
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 25 2011
STATUS
approved