A205465 Number of (n+1)X8 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock differing from each horizontal or vertical neighbor

92062852, 52550629576, 44457471151176, 37682835967710128, 31646417127980445980, 26629795409510135065440

Offset

1,1

Comments

Column 7 of A205466

Links

Table of n, a(n) for n=1..6.

Example

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

Crossrefs

Sequence in context: A034643 A186051 A205665 * A117624 A147527 A293244

Adjacent sequences: A205462 A205463 A205464 * A205466 A205467 A205468

Keyword

nonn

Author

R. H. Hardin Jan 27 2012

Status

approved