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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 9
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 (list; table; graph; refs; listen; history; text; internal format)
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

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Last modified September 27 04:10 EDT 2021. Contains 347673 sequences. (Running on oeis4.)