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A205233 Number of (n+1)X7 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero 0
58892, 11675764, 3408343704, 1029060698687, 315651250338121 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A205235

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A214118 A157131 A217603 * A235953 A343374 A321826

Adjacent sequences:  A205230 A205231 A205232 * A205234 A205235 A205236

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 24 2012

STATUS

approved

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Last modified September 19 15:37 EDT 2021. Contains 347564 sequences. (Running on oeis4.)