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A223924
Number of 7Xn 0..2 arrays with rows and antidiagonals unimodal and columns nondecreasing
1
36, 1296, 26494, 359344, 3588729, 28247478, 183720802, 1022160764, 4994941017, 21887522070, 87447220301, 322906269126, 1114442061385, 3628609366226, 11233293675288, 33279853366178, 94865889314403, 261354658486111
OFFSET
1,1
COMMENTS
Row 7 of A223918
FORMULA
Empirical polynomial of degree 28 (see link above)
EXAMPLE
Some solutions for n=3
..0..0..0....1..0..0....0..0..0....1..0..0....1..0..0....0..0..0....0..0..0
..0..0..0....1..0..0....1..0..0....1..0..0....1..0..0....0..1..0....1..0..0
..0..1..0....1..1..0....1..0..0....1..0..0....2..0..0....0..1..1....1..0..0
..1..1..0....1..2..0....1..0..0....1..0..0....2..0..0....1..1..1....1..0..0
..1..1..0....2..2..1....2..0..0....1..0..0....2..0..0....1..1..2....2..2..1
..2..1..0....2..2..1....2..1..0....2..2..0....2..1..1....1..1..2....2..2..1
..2..2..1....2..2..2....2..2..1....2..2..2....2..2..2....1..2..2....2..2..1
CROSSREFS
Sequence in context: A144128 A223405 A224267 * A224352 A224194 A224011
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 29 2013
STATUS
approved