A207857 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 0 and 1 0 1 vertically

40, 1600, 13230, 178088, 2047902, 24999522, 298294290, 3584335104, 42968437070, 515629329072, 6185911022388, 74218338931926, 890410143869610, 10682416271430446, 128158495357747566, 1537548202464027744

Offset

1,1

Comments

Column 7 of A207858

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A207702 A207907 A208038 * A207425 A207740 A208082

Adjacent sequences: A207854 A207855 A207856 * A207858 A207859 A207860

Keyword

nonn

Author

R. H. Hardin Feb 21 2012

Status

approved