A209855 1/4 the number of (n+1)X6 0..3 arrays with every 2X2 subblock having one or four distinct clockwise edge differences

68201, 10137464, 1460712837, 213959648565, 31192434742293, 4558499131132306, 665390868679472699, 97186568439693174719, 14190270163904001178515, 2072301261390366075837054, 302603111366297145304112118

Offset

1,1

Comments

Column 5 of A209858

Links

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

Example

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

Crossrefs

Sequence in context: A234662 A250924 A206193 * A206665 A206174 A205428

Adjacent sequences: A209852 A209853 A209854 * A209856 A209857 A209858

Keyword

nonn

Author

R. H. Hardin Mar 14 2012

Status

approved