A223883 Number of nX3 0..2 arrays with row sums unimodal and column sums inverted unimodal.

22, 564, 11250, 187019, 2718572, 35673854, 431939504, 4901224903, 52724142720, 542458862253, 5374667759935, 51561822161831, 481068900940649, 4380767665324085, 39052633428110362, 341657170980967653

Offset: 1

Author

R. H. Hardin Mar 28 2013

Keywords

• nonn

Comments

Column 3 of A223885

Examples

			Some solutions for n=3
..1..2..0....1..0..1....1..1..1....0..1..0....1..0..2....1..2..1....1..0..2
..1..1..1....1..1..0....0..2..2....1..2..1....2..1..0....2..0..1....1..2..0
..2..1..0....0..0..1....1..0..2....2..0..1....1..0..2....1..2..0....0..1..2
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..47