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A224176
Number of 5Xn 0..3 arrays with rows and antidiagonals unimodal and columns nondecreasing
1
56, 3136, 87878, 1460836, 16625026, 143558572, 1012166273, 6125081331, 32894121939, 160366617391, 721130521043, 3026020511079, 11954211905590, 44767125938612, 159803658410914, 546205629183576, 1794213349019225
OFFSET
1,1
COMMENTS
Row 5 of A224173
FORMULA
Empirical polynomial of degree 30 (see link above)
EXAMPLE
Some solutions for n=3
..1..2..0....0..3..0....0..1..1....0..2..0....0..1..0....0..3..0....2..1..1
..1..2..1....1..3..2....0..1..1....0..3..0....0..2..0....0..3..0....2..2..1
..1..3..1....2..3..2....0..2..1....2..3..2....0..2..0....1..3..0....2..2..1
..2..3..1....2..3..2....0..2..2....2..3..2....0..2..0....1..3..1....2..2..1
..2..3..2....2..3..3....3..3..3....2..3..3....1..3..1....2..3..2....3..2..2
CROSSREFS
Sequence in context: A205227 A376228 A328352 * A223868 A223990 A224388
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 31 2013
STATUS
approved