A209784 Half the number of (n+1)X6 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference

397734, 122871278, 36572974507, 11197401806412, 3413352967754696, 1043428174053823487, 318751987571164698772, 97407366419231553054246, 29763727089493837413742773, 9094996467359607511188778436

Offset

1,1

Comments

Column 5 of A209787

Links

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

Example

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

Crossrefs

Sequence in context: A234331 A250925 A230148 * A015424 A083634 A209910

Adjacent sequences: A209781 A209782 A209783 * A209785 A209786 A209787

Keyword

nonn

Author

R. H. Hardin Mar 13 2012

Status

approved