A223884 Number of nX4 0..2 arrays with row sums unimodal and column sums inverted unimodal.

46, 3298, 187019, 8872648, 367614623, 13705619321, 469700382368, 15028355082420, 454196578645090, 13083963708689100, 361818451966460877, 9660123785787286044, 250171942122628486761, 6308537121431695167897

Offset: 1

Author

R. H. Hardin Mar 28 2013

Keywords

• nonn

Comments

Column 4 of A223885

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..15