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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 5
207, 1720, 1720, 13366, 47900, 13366, 83720, 1256641, 1256641, 83720, 496848, 25243114, 121990159, 25243114, 496848, 2629706, 469617426, 8736632044, 8736632044, 469617426, 2629706, 13334897, 7313092616, 574289759868 (list; table; graph; refs; listen; history; text; internal format)
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

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Last modified October 28 13:15 EDT 2021. Contains 348329 sequences. (Running on oeis4.)