A205519 Number of (n+1)X8 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock differing from each horizontal or vertical neighbor

750426, 43434216, 3703472454, 291860355624, 23817299324910, 1873315597879056, 153727495029223899, 12064169543471230344, 990342568808823237237, 77725844134691110148598, 6379845168269713848869523

Offset

1,1

Comments

Column 7 of A205520

Links

R. H. Hardin, Table of n, a(n) for n = 1..23

Example

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

Crossrefs

Sequence in context: A352345 A205743 A206675 * A166001 A253374 A204229

Adjacent sequences: A205516 A205517 A205518 * A205520 A205521 A205522

Keyword

nonn

Author

R. H. Hardin Jan 28 2012

Status

approved