A208415 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 0 1 1 vertically

2, 16, 102, 1269, 18395, 365094, 8948825, 295643872, 11569038318, 627185978622, 39743547264799, 3541122637275087, 367535911624122068, 55280614681310159979, 9428817551220326025746, 2476044134980962346444356

Offset

1,1

Comments

Diagonal of A208420

Links

R. H. Hardin, Table of n, a(n) for n = 1..22

Example

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

Crossrefs

Sequence in context: A207955 A207494 A207117 * A207945 A207853 A208022

Adjacent sequences: A208412 A208413 A208414 * A208416 A208417 A208418

Keyword

nonn

Author

R. H. Hardin Feb 26 2012

Status

approved