A205274 Number of (n+1)X3 0..3 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing

2504, 87912, 2940732, 77255835, 1905682493, 40440032498, 815438067758, 15104514591436, 270214374017756, 4624070809987435, 77603848289590015, 1276770295413373726, 20837216097787580754, 337831908519292150785

Offset

1,1

Comments

Column 2 of A205277

Links

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

Example

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

Crossrefs

Sequence in context: A031548 A045216 A205175 * A234790 A251858 A251854

Adjacent sequences: A205271 A205272 A205273 * A205275 A205276 A205277

Keyword

nonn

Author

R. H. Hardin Jan 24 2012

Status

approved