A205175 Number of (n+1)X3 0..3 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards

2504, 61320, 1373400, 24657580, 431119786, 6934715463, 111837040063, 1771131367142, 28327757365626, 453494114475033, 7305871237209949, 117969494611489634, 1909620189311351615, 30943236980670320787

Offset

1,1

Comments

Column 2 of A205181

Links

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

Example

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

Crossrefs

Sequence in context: A031688 A031548 A045216 * A205274 A234790 A251858

Adjacent sequences: A205172 A205173 A205174 * A205176 A205177 A205178

Keyword

nonn

Author

R. H. Hardin Jan 22 2012

Status

approved