A204832 Number of (n+1)X(n+1) 0..2 arrays with the permanents of all 2X2 subblocks equal and nonzero

56, 524, 7070, 247108, 11643054, 1289881302, 204749436552, 73036201343336, 38899944310300258, 45302488265102707276, 80802524916380070655310

Offset

1,1

Comments

Diagonal of A204840

Links

Table of n, a(n) for n=1..11.

Example

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

Crossrefs

Sequence in context: A219832 A219576 A219943 * A190536 A190070 A220930

Adjacent sequences: A204829 A204830 A204831 * A204833 A204834 A204835

Keyword

nonn

Author

R. H. Hardin Jan 19 2012

Status

approved