A204873 Number of (n+1)X6 0..3 arrays with the permanents of all 2X2 subblocks equal and nonzero.

12241, 219871, 1912223, 27234451, 282748327, 3677014705, 41067117035, 514372854783, 5938466697393, 73228672432163, 859408349572671, 10529539488838707, 124718287347275147, 1524137959225376351

Offset

1,1

Comments

Column 5 of A204876

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..3..2..0..2..3..3....0..3..0..3..2..2....2..2..1..2..1..3....0..1..0..1..2..1
..3..0..3..2..0..2....2..1..2..0..2..1....0..2..1..2..1..1....2..2..2..0..2..0
..1..2..3..0..3..2....2..2..2..3..2..2....2..2..1..2..1..3....1..0..1..1..1..1
..3..0..3..2..3..0....2..1..2..0..2..1....0..2..1..2..1..1....2..2..0..2..0..2
..0..2..3..0..3..2....2..2..2..3..0..3....2..2..1..2..1..3....1..0..1..1..1..0

Crossrefs

Sequence in context: A035915 A104791 A338950 * A135128 A166000 A252500

Adjacent sequences: A204870 A204871 A204872 * A204874 A204875 A204876

Keyword

nonn

Author

R. H. Hardin, Jan 20 2012

Status

approved