A206472 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having zero permanent

25, 121, 121, 441, 1411, 441, 1849, 11025, 11025, 1849, 7225, 106891, 110889, 106891, 7225, 29241, 958441, 1896129, 1896129, 958441, 29241, 116281, 8963667, 23707161, 68352739, 23707161, 8963667, 116281, 466489, 82609921, 356190129, 1693734025

Offset

1,1

Comments

Table starts

.....25.......121.........441...........1849.............7225

....121......1411.......11025.........106891...........958441

....441.....11025......110889........1896129.........23707161

...1849....106891.....1896129.......68352739.......1693734025

...7225....958441....23707161.....1693734025......61244865529

..29241...8963667...356190129....52552339515....3420616959081

.116281..82609921..4803737481..1457044540561..144660587865049

.466489.767387611.69030731169.43214597865811.7310031634630729

Links

R. H. Hardin, Table of n, a(n) for n = 1..684

Example

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

Crossrefs

Column 1 is A139818(n+3)

Sequence in context: A126412 A078815 A270368 * A036057 A083509 A343075

Adjacent sequences: A206469 A206470 A206471 * A206473 A206474 A206475

Keyword

nonn,tabl

Author

R. H. Hardin Feb 08 2012

Status

approved