A189903 Number of nX7 binary arrays without the pattern 0 0 1 1 diagonally, vertically, antidiagonally or horizontally.

96, 9216, 884736, 39048081, 1841998924, 73093919926, 2662054379066, 94632691298302, 3195656417625712, 106562344127343098, 3486148871895147896, 112963121516301689241, 3635916169412490099632, 116375651934670010881664

Offset

1,1

Comments

Column 7 of A189905

Links

R. H. Hardin, Table of n, a(n) for n = 1..34

Example

Some solutions for 4X7
..0..0..0..0..1..0..0....0..0..0..1..0..0..0....0..0..1..0..1..1..0
..0..1..0..0..1..0..1....0..1..1..0..1..0..0....0..0..1..0..1..0..1
..0..1..0..1..1..0..1....0..0..0..0..0..1..0....0..0..0..0..0..1..0
..0..0..0..0..0..0..1....0..0..1..0..0..0..0....0..0..1..0..1..1..0

Crossrefs

Sequence in context: A270603 A000545 A189909 * A189159 A254286 A216039

Adjacent sequences: A189900 A189901 A189902 * A189904 A189905 A189906

Keyword

nonn

Author

R. H. Hardin, May 01 2011

Status

approved