A210354 1/4 the number of (n+1) X 8 0..3 arrays with every 2 X 2 subblock having one, two or three distinct clockwise edge differences.

61005068, 410707536246, 2669774395715994, 17671175952055398322, 116921261170364094516762, 774109750788951970050073763, 5125371159957295208758939227336, 33936011149482169319138231985042475

Offset

1,1

Comments

Column 7 of A210355.

Links

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

Example

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

Crossrefs

Cf. A210355.

Sequence in context: A017602 A227285 A172584 * A309062 A022218 A059001

Adjacent sequences: A210351 A210352 A210353 * A210355 A210356 A210357

Keyword

nonn

Author

R. H. Hardin, Mar 20 2012

Status

approved