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A224284
Number of 5Xn 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing
1
1024, 160000, 2596992, 21348990, 137489538, 817075668, 4728056658, 26524273813, 141437578159, 706256665798, 3280530467805, 14165878265784, 57028400060821, 214999615263699, 762959963267749, 2561695629991349, 8178284227377456
OFFSET
1,1
COMMENTS
Row 5 of A224281
FORMULA
Empirical polynomial of degree 30 (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
..2..0..0....0..0..2....0..2..0....1..0..0....1..2..0....1..2..1....2..0..0
..0..0..0....2..2..2....3..3..2....3..3..0....3..3..3....2..2..1....1..1..0
..3..0..0....2..2..0....3..2..1....3..1..0....3..3..1....2..2..3....1..1..0
..1..3..2....2..3..0....3..1..0....1..1..1....3..2..0....3..3..3....1..1..2
CROSSREFS
Sequence in context: A224027 A174155 A269205 * A224207 A017033 A017117
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 02 2013
STATUS
approved