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A224285
Number of 6Xn 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing
1
4096, 1600000, 37128051, 356222482, 2425304290, 14587480744, 86539248276, 519675953580, 3101250505830, 17906548084860, 98091759991859, 504379639489778, 2424565118584031, 10897029351109181, 45902682124075154
OFFSET
1,1
COMMENTS
Row 6 of A224281
FORMULA
Empirical polynomial of degree 36 (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..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..2..0..0....0..0..3....0..0..1....0..0..0....1..2..1....0..0..0....2..2..1
..1..2..1....2..3..2....0..3..1....2..2..0....2..1..1....3..1..1....3..3..1
..2..1..1....3..2..0....3..1..0....3..2..1....3..1..0....1..1..1....3..2..0
..2..2..3....2..3..1....3..3..3....2..1..0....3..2..1....3..3..0....2..2..2
CROSSREFS
Sequence in context: A224028 A269206 A183816 * A224208 A017034 A017118
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 02 2013
STATUS
approved