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A223755
Number of n X n 0..3 arrays with rows, antidiagonals and columns unimodal
0
4, 256, 61733, 26631193, 15947472102, 12025063773557, 10962346407561257, 11777774040586957640
OFFSET
1,1
COMMENTS
Diagonal of A223762
EXAMPLE
Some solutions for n=3
..0..1..3....1..2..3....2..3..0....0..2..0....2..3..0....0..3..2....0..0..2
..1..3..2....0..0..2....3..2..0....0..2..3....2..2..2....2..3..3....0..3..3
..3..0..0....0..0..1....3..2..0....1..3..2....2..2..2....1..2..2....3..1..0
CROSSREFS
Sequence in context: A209588 A085534 A071617 * A223844 A122249 A326556
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 27 2013
STATUS
approved