A223872 Number of nX4 0..3 arrays with rows, diagonals and antidiagonals unimodal.

130, 16900, 1336985, 88682677, 5941888105, 411716468431, 28928809433978, 2033941972287214, 142745781634483746, 10010372252279889400, 701993937730379495973, 49234252523359799838831, 3453202734892638263202801

Offset: 1

Author

R. H. Hardin Mar 28 2013

Keywords

• nonn

Comments

Column 4 of A223876

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210