A204838 Number of (n+1)X7 0..2 arrays with the permanents of all 2X2 subblocks equal and nonzero

5304, 81706, 752028, 9984856, 102186340, 1289881302, 13850148312, 170465231268, 1881896188454, 22817667622740, 256504693469550, 3080269435649410, 35064690706443986, 418391719698372934, 4805847180224170442

Offset

1,1

Comments

Column 6 of A204840

Links

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

Example

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

Crossrefs

Sequence in context: A300365 A227486 A252189 * A212078 A176136 A213964

Adjacent sequences: A204835 A204836 A204837 * A204839 A204840 A204841

Keyword

nonn

Author

R. H. Hardin Jan 19 2012

Status

approved