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A201694
Number of n X n 0..2 arrays with rows and columns lexicographically nondecreasing read forwards and nonincreasing read backwards
0
3, 10, 116, 4998, 930564, 795339012, 3262897246338
OFFSET
1,1
COMMENTS
Diagonal of A201700
EXAMPLE
Some solutions for n=3
..0..1..2....1..1..2....0..0..2....0..2..2....0..2..2....0..1..2....0..1..2
..0..2..0....1..2..1....0..2..0....0..2..2....1..0..2....2..0..2....2..1..1
..1..0..0....2..1..1....2..1..0....2..0..0....2..2..1....2..2..1....2..2..0
CROSSREFS
Sequence in context: A034945 A374868 A132480 * A336210 A244305 A074260
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 03 2011
STATUS
approved