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A224379
Number of 7Xn 0..2 arrays with rows unimodal and antidiagonals nondecreasing
1
2187, 419904, 9588028, 86251004, 495660330, 2231009824, 8684742989, 30944246553, 104711652679, 344919346826, 1122234055919, 3627085766299, 11631834618628, 36830849015498, 114465864361342, 347386072561498
OFFSET
1,1
COMMENTS
Row 7 of A224374
FORMULA
Empirical polynomial of degree 28 (see link above)
EXAMPLE
Some solutions for n=3
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..0..0..1....0..0..0....0..0..1....0..0..1....0..0..1....1..0..0....0..0..0
..0..1..1....0..1..0....0..1..0....0..1..0....0..1..0....0..0..0....0..0..0
..2..2..2....2..0..0....1..0..0....1..2..0....1..1..0....1..1..0....2..1..0
..2..2..0....0..2..1....1..0..0....2..1..1....1..1..0....1..2..0....1..0..0
..2..1..1....2..2..1....2..0..0....1..2..1....1..0..0....2..0..0....0..1..2
..2..2..0....2..2..0....2..1..0....2..1..0....0..1..0....2..1..0....1..2..0
CROSSREFS
Sequence in context: A016771 A059979 A224315 * A016843 A016891 A016951
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 05 2013
STATUS
approved