A186064 Number of (n+2)X3 0..2 arrays with each 3X3 subblock having a positive determinant

6396, 85950, 1119798, 14499921, 189215295, 2464134402, 32080884108, 417846175365, 5441672218326, 70866667068072, 922916034310758, 12019300783493754, 156529394078831076, 2038511626441264185

Offset

1,1

Comments

Column 1 of A186068

Links

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

Example

Some solutions for 4X3
..2..2..1....0..0..2....0..2..1....1..0..2....2..1..2....0..1..1....1..0..2
..1..0..2....2..1..0....2..0..0....2..2..2....0..1..1....2..1..2....2..1..0
..1..0..1....1..2..2....2..2..0....0..0..2....1..1..2....2..1..0....2..2..1
..0..2..2....1..0..2....1..1..1....2..0..2....2..0..0....1..1..0....1..2..2

Crossrefs

Sequence in context: A322935 A253825 A186068 * A251454 A237954 A269827

Adjacent sequences: A186061 A186062 A186063 * A186065 A186066 A186067

Keyword

nonn

Author

R. H. Hardin Feb 11 2011

Status

approved