A189777 Number of nX7 binary arrays without the pattern 1 0 0 1 diagonally, vertically or horizontally

97, 9409, 912673, 48633913, 2475199422, 112831587094, 5404382625660, 256681706358532, 12454322928575313, 600861626029136589, 29098233597048811000, 1404753215113899124268, 67882068723678010867189

Offset

1,1

Comments

Column 7 of A189779

Links

Ron Hardin, Table of n, a(n) for n = 1..155

Example

Some solutions for 5X7
..0..0..0..0..0..0..0....0..0..0..0..0..0..0....0..0..0..0..0..0..0
..1..1..1..0..0..0..0....0..0..0..0..0..0..0....1..0..1..0..0..0..0
..1..0..1..1..0..0..0....1..1..1..1..1..0..0....1..1..1..0..0..0..0
..1..1..1..0..0..0..0....0..0..0..0..0..0..0....1..0..1..0..0..0..0
..1..1..1..1..0..0..0....1..1..1..0..1..0..0....0..0..0..0..0..0..0

Crossrefs

Sequence in context: A017760 A069419 A189341 * A302330 A057011 A218591

Adjacent sequences: A189774 A189775 A189776 * A189778 A189779 A189780

Keyword

nonn

Author

R. H. Hardin Apr 27 2011

Status

approved