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A205231 Number of (n+1)X5 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero 1
4584, 221766, 12273323, 586841773, 26740726836, 1029060698687, 36382087706267, 1135816496738977, 32862120787837724, 870088769377037963, 21637993490423508578, 503958946925132309179, 11149427022603281196173 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A205235

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A252405 A252580 A230947 * A231022 A251385 A185470

Adjacent sequences:  A205228 A205229 A205230 * A205232 A205233 A205234

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 24 2012

STATUS

approved

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Last modified October 31 08:46 EDT 2020. Contains 338101 sequences. (Running on oeis4.)