A204839 Number of (n+1)X8 0..2 arrays with the permanents of all 2X2 subblocks equal and nonzero

13786, 284982, 3530808, 60562860, 852866652, 13850148312, 204749436552, 3260124241278, 49236962104088, 778105899557164, 11879817584822700, 187174091342691802, 2876184773375657976, 45257365906910863478

Offset

1,1

Comments

Column 7 of A204840

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A270639 A031807 A119730 * A208487 A188102 A109102

Adjacent sequences: A204836 A204837 A204838 * A204840 A204841 A204842

Keyword

nonn

Author

R. H. Hardin Jan 19 2012

Status

approved