A205056 Number of (n+1)X(n+1) 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing

81, 7572, 4502701, 14708332687, 379440722213179

Offset

1,1

Comments

Diagonal of A205063

Links

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

Example

Some solutions for n=4
..2..1..0..0..2....2..0..1..2..0....2..1..0..2..1....1..2..1..0..1
..0..0..0..2..1....2..0..2..0..2....2..0..2..0..2....0..2..0..2..0
..1..1..1..2..0....0..0..2..2..2....1..1..0..2..0....2..2..2..2..2
..1..2..2..1..1....1..2..0..0..1....0..2..2..0..2....2..2..2..2..2
..1..1..2..1..2....2..1..1..0..1....1..2..0..1..2....2..2..2..2..2

Crossrefs

Sequence in context: A185770 A222441 A206216 * A186132 A206504 A046172

Adjacent sequences: A205053 A205054 A205055 * A205057 A205058 A205059

Keyword

nonn

Author

R. H. Hardin Jan 21 2012

Status

approved