A185433 Number of (n+2)X9 0..7 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.

1216284173329482, 745543958045415621, 223694029250999654095, 42451419931252675522287, 5686283998453160141912882, 573443108636317829849582612, 45497009931939204350899288292

Offset: 1

Author

R. H. Hardin Jan 27 2011

Keywords

• nonn

Comments

Column 7 of A185435

Examples

			Some solutions for 4X9
..0..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..1..1
..0..0..0..0..0..0..0..1..3....0..0..0..0..0..0..0..1..7
..0..0..0..0..0..0..0..1..7....0..0..0..0..0..0..0..4..0
..0..0..0..0..0..0..0..6..7....0..0..0..0..0..0..0..4..5
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..10