A209794 Half the number of (n+1)X7 0..2 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference

428676, 182095128, 76648760118, 32342700329739, 13642480312938969, 5755153225046584062, 2427793108137633168210, 1024163896230568622499099, 432042536759800714389833904, 182256830990255873542213582497

Offset

1,1

Comments

Column 6 of A209796

Links

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

Example

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

Crossrefs

Sequence in context: A192228 A234737 A206082 * A234448 A269798 A251639

Adjacent sequences: A209791 A209792 A209793 * A209795 A209796 A209797

Keyword

nonn

Author

R. H. Hardin Mar 13 2012

Status

approved