A205517 Number of (n+1) X 6 0..2 arrays with the number of clockwise edge increases in every 2 X 2 subblock differing from each horizontal or vertical neighbor.

35577, 864948, 27630789, 825828828, 25618992453, 764670893556, 23817299324910, 709372088422890, 22102921087553340, 658465356466048596, 20513506300848143013, 611133044545340195310, 19039149809165434333251

Offset

1,1

Comments

Column 5 of A205520.

Links

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

Example

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

Crossrefs

Cf. A205520.

Sequence in context: A184002 A205741 A206673 * A204666 A163680 A172712

Adjacent sequences: A205514 A205515 A205516 * A205518 A205519 A205520

Keyword

nonn

Author

R. H. Hardin Jan 28 2012

Status

approved