A206465 Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having zero permanent

25, 1411, 110889, 68352739, 61244865529, 377599682448675, 3848918441303655721, 232902549300945882026755, 26631802795003317433250214201, 15822211869785299795988010016362883

Offset

1,1

Comments

Diagonal of A206472

Links

R. H. Hardin, Table of n, a(n) for n = 1..18

Example

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

Crossrefs

Sequence in context: A278851 A243943 A192107 * A364244 A138246 A219091

Adjacent sequences: A206462 A206463 A206464 * A206466 A206467 A206468

Keyword

nonn

Author

R. H. Hardin Feb 08 2012

Status

approved