A233112 Number of nX7 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

2136, 53692063, 1471365099497, 40385221182281560, 1108502928092713640626, 30426461543542804692390703, 835153023014356911992288011287, 22923486223269810222694953768125080

Offset: 1

Author

R. H. Hardin, Dec 04 2013

Keywords

• nonn

Comments

Column 7 of A233113

Examples

			Some solutions for n=2
..0..0..0..1..0..1..5....0..0..0..1..2..4..0....0..0..0..1..2..5..3
..0..0..0..0..2..5..3....1..0..0..0..0..4..4....4..0..0..2..5..5..4
		

Links

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