A223795 Number of n X n 0..3 arrays with rows and antidiagonals unimodal.

4, 256, 110116, 151310069, 453578376041, 2401987689157097, 19618352087687868206, 225161556703631799074083, 3396567436573176749810085543, 64088930629934993395801694394536

Offset: 1

Author

R. H. Hardin Mar 27 2013

Keywords

• nonn

Comments

Diagonal of A223801

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..11