A223973 Number of nX6 0..2 arrays with rows and antidiagonals unimodal.

148, 21904, 2026448, 153196498, 10676374380, 715985189481, 47087051658638, 3065213211139220, 198505156112480574, 12821707501426587223, 827061911875686602143, 53312878153050071853965, 3435377864410521923551264

Offset: 1

Author

R. H. Hardin Mar 30 2013

Keywords

• nonn

Comments

Column 6 of A223975

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 91

Formula

Empirical recurrence of order 91 (see link above)