A207796 Number of (n+1) X 6 0..3 arrays with every 2 X 3 or 3 X 2 subblock having an unequal number of clockwise and counterclockwise edge increases.

1714176, 190505040, 26462419832, 3518595143968, 507960770486000, 68409320823594368, 9906634826573197984

Offset

1,1

Comments

Column 5 of A207799.

Links

Table of n, a(n) for n=1..7.

Example

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

Crossrefs

Sequence in context: A121887 A237033 A234341 * A235847 A307962 A257382

Adjacent sequences: A207793 A207794 A207795 * A207797 A207798 A207799

Keyword

nonn

Author

R. H. Hardin, Feb 20 2012

Status

approved