A209106 Number of 7Xn 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.

365, 254496, 125526240, 57113932788, 25586970618660, 11437585318270860, 5112092569118325704, 2285013663964828552960, 1021387683873603848380972, 456557468966590708568722520, 204080223921705625484844604564

Offset: 1

Author

R. H. Hardin Mar 05 2012

Keywords

• nonn

Comments

Row 7 of A209100

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..158