A184685 Number of (n+1)X9 binary arrays with every 2X2 subblock singular.

11584, 867152, 37779664, 2107074576, 105530924944, 5556396815504, 286297979078416, 14901599172048528, 772255092178447120, 40103190379637623184, 2080745823672990984720, 108004153792892136250000

Offset: 1

Author

R. H. Hardin Jan 19 2011

Keywords

• nonn

Comments

Column 8 of A184686

Examples

			Some solutions for 3X9
..1..0..1..1..0..0..1..0..1....0..0..0..1..1..1..1..1..0
..0..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0..0
..0..0..1..0..0..0..0..1..0....0..0..0..0..0..0..0..0..1
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..200