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A201624
Number of nX7 0..3 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor
0
40, 6654, 1877283, 891142897, 464328365996, 242036871702096
OFFSET
1,1
COMMENTS
Column 7 of A201625
EXAMPLE
Some solutions for n=2
..0..0..1..2..2..3..3....0..0..0..0..2..3..3....0..0..0..0..2..2..3
..2..2..1..3..3..0..0....1..1..1..2..2..3..3....1..1..3..3..0..0..3
CROSSREFS
Sequence in context: A196706 A196855 A196949 * A295587 A183766 A364517
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 03 2011
STATUS
approved