A186047 Number of (n+2)X6 binary arrays with each 3X3 subblock singular

72802, 2270854, 69579654, 1926378146, 56374248542, 1642063770394, 47475070890310, 1379260723246658, 40045291785767870, 1162075116201924610, 33736323804548467326, 979334920036778030402, 28428312586829238181558

Offset

1,1

Comments

Column 4 of A186052

Links

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

Example

Some solutions for 4X6
..0..0..1..0..1..0....0..0..1..1..1..0....0..0..1..0..1..1....0..0..1..0..1..1
..0..0..0..0..0..0....0..0..1..0..1..1....0..1..0..0..1..1....0..1..0..1..0..1
..0..1..0..0..1..0....0..0..0..0..0..0....0..0..1..0..1..1....0..0..0..0..0..0
..0..1..1..1..1..1....0..1..0..0..1..1....0..1..1..0..0..1....0..0..0..0..0..1

Crossrefs

Sequence in context: A234243 A260053 A237555 * A252333 A161730 A071145

Adjacent sequences: A186044 A186045 A186046 * A186048 A186049 A186050

Keyword

nonn

Author

R. H. Hardin Feb 11 2011

Status

approved