A222775 Number of 7 X n 0..1 arrays with exactly floor(7 X n/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.

0, 512, 7575, 196185, 2645385, 79612578, 1139211468, 36347447930, 539406313075, 17697303249138, 268539430883934, 8952558217033179, 137856342447857961, 4642930013771229936, 72224464903123955127, 2449378469060543554130

Offset: 1

Author

R. H. Hardin Mar 05 2013

Keywords

• nonn

Comments

Row 7 of A222769.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..25

Crossrefs

Cf. A222769.