A233072 Number of nX7 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 in row major order.

365, 57122, 11235652, 2293174089, 475027244071, 98950914937033, 20656955820980290, 4315955749032401626, 902039316691285768305, 188549438666892024287013, 39413397925167802927174270

Offset: 1

Author

R. H. Hardin, Dec 03 2013

Keywords

• nonn

Comments

Column 7 of A233073

Examples

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

Links

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