A209645 Number of n X n 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 0 1 and 1 0 1 vertically

2, 16, 102, 630, 4690, 34012, 287140, 2364992, 22028490, 200930125, 2026692954, 20118254688, 217071252489, 2316174126448, 26506083938686, 301219138880440, 3632894429145798, 43657425153387876, 552138493209771090

Offset

1,1

Comments

Diagonal of A209650

Links

R. H. Hardin, Table of n, a(n) for n = 1..38

Example

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

Crossrefs

Sequence in context: A361814 A032260 A197800 * A207062 A207398 A207699

Adjacent sequences: A209642 A209643 A209644 * A209646 A209647 A209648

Keyword

nonn

Author

R. H. Hardin Mar 11 2012

Status

approved