A189339 Number of nX5 binary arrays without the pattern 1 0 0 1 diagonally, vertically, antidiagonally or horizontally

28, 784, 21952, 390721, 6814820, 109746642, 1857004061, 31177656076, 533269057178, 9053472938552, 154252966185542, 2618674812680579, 44520074517291894, 756141322418868556, 12851400623635035810

Offset

1,1

Comments

Column 5 of A189343

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 4X5
..0..0..1..0..0....0..1..1..0..1....0..0..1..1..0....0..0..0..0..0
..0..1..0..1..0....0..0..0..1..1....0..1..1..1..1....0..1..1..1..0
..1..0..1..1..0....0..0..1..1..1....0..0..0..0..1....0..0..0..1..0
..0..0..1..0..1....0..0..1..0..1....1..0..1..0..0....0..1..1..0..1

Crossrefs

Sequence in context: A171302 A189901 A189907 * A189775 A189157 A267732

Adjacent sequences: A189336 A189337 A189338 * A189340 A189341 A189342

Keyword

nonn

Author

R. H. Hardin Apr 20 2011

Status

approved