A204837 Number of (n+1)X6 0..2 arrays with the permanents of all 2X2 subblocks equal and nonzero

2048, 21380, 157872, 1438706, 11643054, 102186340, 852866652, 7401341360, 62559638330, 541098230290, 4603000012148, 39777249760844, 339717186256760, 2935286205895216, 25139048468622558, 217230974640825190

Offset

1,1

Comments

Column 5 of A204840

Links

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

Example

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

Crossrefs

Sequence in context: A195069 A316499 A135290 * A351162 A100629 A247934

Adjacent sequences: A204834 A204835 A204836 * A204838 A204839 A204840

Keyword

nonn

Author

R. H. Hardin Jan 19 2012

Status

approved