A186067 Number of (n+2)X6 0..2 arrays with each 3X3 subblock having a positive determinant

14499921, 1983108841, 247063804348, 29265455672501, 3645051233578966, 448897699238594169, 55017751506509218482

Offset

1,1

Comments

Column 4 of A186068

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for 4X6
..0..0..2..0..0..1....0..0..1..1..0..1....0..0..1..0..2..1....0..0..2..0..2..2
..1..0..0..2..0..0....1..0..0..2..0..1....1..0..0..1..0..0....1..0..0..2..1..1
..0..1..0..2..1..0....0..1..0..0..1..2....0..1..0..2..1..0....0..1..0..0..2..0
..0..0..1..0..2..1....0..0..2..1..0..2....0..0..1..0..2..1....0..0..1..1..1..1

Crossrefs

Sequence in context: A251009 A136608 A205413 * A183661 A352424 A267361

Adjacent sequences: A186064 A186065 A186066 * A186068 A186069 A186070

Keyword

nonn

Author

R. H. Hardin Feb 11 2011

Status

approved