A205235 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero

56, 266, 266, 1187, 2773, 1187, 4584, 27157, 27157, 4584, 17010, 221766, 640652, 221766, 17010, 58892, 1707082, 12273323, 12273323, 1707082, 58892, 198325, 11675764, 221519116, 586841773, 221519116, 11675764, 198325, 642908, 76088840

Offset

1,1

Comments

Table starts

.....56.......266.........1187...........4584...........17010...........58892

....266......2773........27157.........221766.........1707082........11675764

...1187.....27157.......640652.......12273323.......221519116......3408343704

...4584....221766.....12273323......586841773.....26740726836...1029060698687

..17010...1707082....221519116....26740726836...3156944585806.315651250338121

..58892..11675764...3408343704..1029060698687.315651250338121

.198325..76088840..48815088704.36382087706267

.642908.460518847.628179958745

Links

R. H. Hardin, Table of n, a(n) for n = 1..60

Example

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

Crossrefs

Sequence in context: A259039 A158487 A212778 * A205228 A110554 A253922

Adjacent sequences: A205232 A205233 A205234 * A205236 A205237 A205238

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 24 2012

Status

approved