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

4584, 221766, 12273323, 586841773, 26740726836, 1029060698687, 36382087706267, 1135816496738977, 32862120787837724, 870088769377037963, 21637993490423508578, 503958946925132309179, 11149427022603281196173

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