A204756 Number of (n+1)X2 0..5 arrays with the permanents of all 2X2 subblocks equal and nonzero.

1175, 3677, 11081, 38789, 131613, 469999, 1652217, 5928687, 21125147, 75994701, 272583363, 982624719, 3538616555, 12780460757, 46152949595, 166980292941, 604289827009, 2189737689861, 7938299557587, 28806261483751, 104582844671167

Offset

1,1

Comments

Column 1 of A204763

Links

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

Example

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

Crossrefs

Sequence in context: A269958 A033912 A204763 * A027485 A204755 A384636

Adjacent sequences: A204753 A204754 A204755 * A204757 A204758 A204759

Keyword

nonn

Author

R. H. Hardin, Jan 18 2012

Status

approved