A205229 - OEIS

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A205229

Number of (n+1)X3 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero

266, 2773, 27157, 221766, 1707082, 11675764, 76088840, 460518847, 2683735998, 14905311330, 80378339143, 419363315736, 2137855359517, 10641083611371, 51996072608754, 249514965798706, 1179572239075227, 5497644720565445

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

OFFSET

1,1

COMMENTS

Column 2 of A205235

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

..2..2..1....1..1..1....2..2..2....2..0..2....2..0..2....2..1..0....2..0..2

..2..0..2....0..1..2....0..1..0....2..1..1....0..1..0....2..0..2....0..2..2

..2..2..0....2..1..0....2..2..2....2..0..2....2..1..2....1..1..1....2..0..2