A186066 Number of (n+2)X5 0..2 arrays with each 3X3 subblock having a positive determinant

1119798, 73704654, 4397457795, 247063804348, 14979356975339, 883392377522107, 51270569990003466, 3057441104713811514, 180521405451576931323, 10542829305586149638446, 625192383944271526112188

Offset

1,1

Comments

Column 3 of A186068

Links

R. H. Hardin, Table of n, a(n) for n = 1..84

Example

Some solutions for 4X5
..0..1..2..1..1....0..2..2..1..0....1..1..2..2..2....0..2..2..0..2
..0..0..1..2..0....0..0..1..2..1....0..0..2..2..0....0..0..1..2..1
..1..0..0..1..2....2..0..0..2..2....1..0..0..1..1....1..0..0..1..1
..0..2..0..0..2....0..2..0..1..2....0..2..0..1..2....0..1..0..0..1

Crossrefs

Sequence in context: A258679 A324647 A245662 * A059121 A116175 A278932

Adjacent sequences: A186063 A186064 A186065 * A186067 A186068 A186069

Keyword

nonn

Author

R. H. Hardin Feb 11 2011

Status

approved