A223880 Number of 6Xn 0..3 arrays with rows, diagonals and antidiagonals unimodal.

4096, 16777216, 6066668157, 411716468431, 12351748855245, 222723966999899, 2864914204785815, 29313435510121943, 256460553486002269, 2005690447094149401

Offset: 1

Author

R. H. Hardin Mar 28 2013

Keywords

• nonn

Comments

Row 6 of A223876

Examples

			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
..0..0..2....0..0..1....0..0..1....0..0..2....0..0..0....0..0..2....0..0..0
..2..2..3....1..2..1....1..2..2....1..2..1....3..0..0....2..2..0....0..0..3
..2..3..1....0..3..3....1..3..2....2..1..1....2..0..0....0..2..2....0..1..2
..0..3..3....0..1..3....0..2..2....0..0..0....2..3..0....0..3..1....1..2..2