A207699 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 0 vertically

2, 16, 102, 729, 8151, 105625, 1369900, 19891600, 334808748, 6181890625, 122401625127, 2624869821025, 60940432893132, 1515981414587236, 40169735443014974, 1131549414709903225, 33790458968920700067

Offset

1,1

Comments

Diagonal of A207703

Links

R. H. Hardin, Table of n, a(n) for n = 1..18

Example

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

Crossrefs

Sequence in context: A209645 A207062 A207398 * A207902 A267713 A207746

Adjacent sequences: A207696 A207697 A207698 * A207700 A207701 A207702

Keyword

nonn

Author

R. H. Hardin Feb 19 2012

Status

approved