A205038 Number of (n+1)X(n+1) 0..6 arrays with the permanents of all 2X2 subblocks equal and nonzero

2232, 100308, 2587806, 1680705854, 178237466160, 1394914737725462

Offset

1,1

Comments

Diagonal of A205046

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for n=4
..3..2..5..6..0....4..3..6..3..5....5..2..1..1..2....4..6..0..6..3
..6..6..0..6..5....3..0..3..0..3....1..0..1..1..0....6..0..6..4..4
..0..5..5..6..0....1..3..1..3..6....4..2..2..0..2....0..6..3..4..5
..6..1..5..0..5....3..0..3..0..3....1..0..1..1..3....6..0..6..4..4
..0..5..5..6..4....6..3..1..3..0....6..2..2..0..2....1..6..0..6..3

Crossrefs

Sequence in context: A205046 A205039 A205981 * A279661 A288846 A289454

Adjacent sequences: A205035 A205036 A205037 * A205039 A205040 A205041

Keyword

nonn

Author

R. H. Hardin Jan 21 2012

Status

approved