A186178 Number of (n+2)X9 0..5 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.

1078197169699, 159099595031390, 12251749347425002, 629512200937395977, 23974440869491730184, 719176668433423037034, 17695100284866122677270, 367664080675457084952938, 6594122451689240367926243

Offset: 1

Author

R. H. Hardin Feb 13 2011

Keywords

• nonn

Comments

Column 7 of A186180

Examples

			Some solutions for 4X9
..0..0..0..0..0..0..0..0..3....0..0..0..0..0..0..0..0..0
..0..0..0..0..0..0..0..1..4....0..0..0..0..0..0..0..0..2
..0..0..0..0..0..0..0..2..3....0..0..0..0..0..0..0..0..5
..0..0..0..0..0..0..3..5..5....0..0..0..0..0..0..0..5..5
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..39