A233244 Number of 6Xn 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

1248, 2565169, 8259321811, 26484848685044, 85091928322674062, 273407904115337411320, 878515500504975619593232, 2822866314474146429532816501, 9070511857884868729790040866912

Offset: 1

Author

R. H. Hardin, Dec 06 2013

Keywords

• nonn

Comments

Row 6 of A233239

Examples

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

Links

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