A207117 Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically

2, 16, 102, 1024, 12288, 175561, 2330037, 40119556, 667127008, 12622297801, 236060280854, 5051251755001, 104507364758952, 2416776784204176, 54925343492859621, 1369884877162739344, 33478733130375924736

Offset

1,1

Comments

Diagonal of A207123

Links

R. H. Hardin, Table of n, a(n) for n = 1..19

Example

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

Crossrefs

Sequence in context: A207236 A207955 A207494 * A208415 A207945 A207853

Adjacent sequences: A207114 A207115 A207116 * A207118 A207119 A207120

Keyword

nonn

Author

R. H. Hardin Feb 15 2012

Status

approved