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A223858
Number of n X n 0..3 arrays with rows and antidiagonals unimodal and columns nondecreasing
0
4, 100, 4884, 315124, 23738426, 1989679315, 181330154458, 17720685250743, 1838270364212150, 200766237618388230, 22925992371163981667, 2721355255765297425689
OFFSET
1,1
COMMENTS
Diagonal of A223864
EXAMPLE
Some solutions for n=3
..0..1..2....0..0..2....0..0..1....1..0..0....3..0..0....0..1..3....0..1..1
..0..1..2....1..1..3....1..1..2....2..0..0....3..3..0....0..2..3....0..1..1
..0..3..2....1..2..3....1..3..2....3..2..2....3..3..0....0..2..3....3..3..3
CROSSREFS
Sequence in context: A127776 A266524 A224167 * A223981 A224385 A249939
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 28 2013
STATUS
approved