A224351 Number of nX6 0..2 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.

28, 784, 13052, 151010, 1421762, 12340932, 107694133, 977742699, 9202126546, 88363107023, 855357421083, 8298639299407, 80568348690372, 782845364074773, 7615402149223961, 74171368176011107, 723133239021563347

Offset: 1

Author

R. H. Hardin Apr 04 2013

Keywords

• nonn

Comments

Column 6 of A224353

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 98

Formula

Empirical recurrence of order 98 (see link above)