A224203 Number of nX7 0..3 arrays with rows unimodal and antidiagonals nondecreasing.

1163, 180821, 11446096, 475218035, 17178450136, 618703866073, 22835261226043, 856178295327574, 32299825618280351, 1220504574023229563, 46124705848425800316, 1742806875797016046956, 65840694352751999751002

Offset: 1

Author

R. H. Hardin Apr 01 2013

Keywords

• nonn

Comments

Column 7 of A224204

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 41

Formula

Empirical recurrence of order 41 (see link above)