A208683 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 0 1 vertically.

2, 16, 78, 927, 12096, 301035, 6398617, 358035204, 14996975204, 1866358422700, 142488171799491, 43994512655386488, 5996882020078059149, 4716359423241404452425, 1123534623785504112746542

Offset

1,1

Comments

Diagonal of A208688.

Links

R. H. Hardin, Table of n, a(n) for n = 1..37

Example

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

Crossrefs

Cf. A208688.

Sequence in context: A208102 A207723 A208835 * A197992 A265173 A264573

Adjacent sequences: A208680 A208681 A208682 * A208684 A208685 A208686

Keyword

nonn

Author

R. H. Hardin Mar 01 2012

Status

approved