A205198 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero

207, 1720, 1720, 13366, 47900, 13366, 83720, 1256641, 1256641, 83720, 496848, 25243114, 121990159, 25243114, 496848, 2629706, 469617426, 8736632044, 8736632044, 469617426, 2629706, 13334897, 7313092616, 574289759868

Offset

1,1

Comments

Table starts

......207.........1720..........13366...........83720..........496848

.....1720........47900........1256641........25243114.......469617426

....13366......1256641......121990159......8736632044....574289759868

....83720.....25243114.....8736632044...2336984953738.574748789388149

...496848....469617426...574289759868.574748789388149

..2629706...7313092616.30273558353295

.13334897.106645806148

.63159947

Links

R. H. Hardin, Table of n, a(n) for n = 1..40

Example

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

Crossrefs

Sequence in context: A204876 A204869 A217297 * A205194 A204868 A223650

Adjacent sequences: A205195 A205196 A205197 * A205199 A205200 A205201

Keyword

nonn,tabl

Author

R. H. Hardin Jan 23 2012

Status

approved