A204783 Number of (n+1)X(n+1) 0..7 arrays with the permanents of all 2X2 subblocks equal and nonzero

3871, 224843, 5719981, 7174463023, 720594943717

Offset

1,1

Comments

Diagonal of A204791

Links

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

Example

Some solutions for n=4
..2..3..0..3..4....4..5..2..4..0....2..2..5..1..2....3..5..6..2..2
..3..3..5..3..1....4..0..4..2..5....3..2..0..2..6....2..0..2..1..4
..5..0..5..0..5....1..5..2..4..0....2..2..5..0..5....3..5..6..2..2
..7..3..2..3..4....3..5..2..6..5....3..2..0..2..3....2..0..2..1..4
..5..0..5..0..5....1..5..2..4..0....5..0..5..2..2....6..5..6..2..2

Crossrefs

Sequence in context: A103117 A204791 A204784 * A035898 A249203 A249325

Adjacent sequences: A204780 A204781 A204782 * A204784 A204785 A204786

Keyword

nonn

Author

R. H. Hardin Jan 19 2012

Status

approved