A204875 Number of (n+1) X 8 0..3 arrays with the permanents of all 2 X 2 subblocks equal and nonzero.

107397, 4655229, 67916249, 2202663919, 41067117035, 1170722541163, 24583374827519, 656392150933239, 14663388969929197, 378660945101530097, 8744464638971306159, 222009208591358855315, 5223465906803482044815

Offset

1,1

Comments

Column 7 of A204876.

Links

R. H. Hardin, Table of n, a(n) for n = 1..84

Example

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

Crossrefs

Sequence in context: A215783 A061332 A237866 * A158964 A248446 A202404

Adjacent sequences: A204872 A204873 A204874 * A204876 A204877 A204878

Keyword

nonn

Author

R. H. Hardin, Jan 20 2012

Status

approved