A222572 Number of nX7 0..2 arrays with no more than floor(nX7/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.

17, 292, 3999, 212957, 4102865, 278335019, 7240361264, 617491399888, 18298988998017, 1694595769301401, 52003776367692101, 4919456993064095471, 152349901845469645928, 14488875201941399981117, 449914171737778687124896

Offset: 1

Author

R. H. Hardin Feb 25 2013

Keywords

• nonn

Comments

Column 7 of A222573

Examples

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