A205462 Number of (n+1) X 5 0..3 arrays with the number of clockwise edge increases in every 2 X 2 subblock differing from each horizontal or vertical neighbor.

151824, 10306944, 843904488, 69248994984, 5649505038240, 461355684937208, 37682835967710128, 3077546846103277112, 251344006886622665336, 20527456988785057420264, 1676490653874059039862192

Offset

1,1

Comments

Column 4 of A205466.

Links

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

Example

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

Crossrefs

Cf. A205466.

Sequence in context: A251987 A205662 A205951 * A248691 A086691 A244598

Adjacent sequences: A205459 A205460 A205461 * A205463 A205464 A205465

Keyword

nonn

Author

R. H. Hardin Jan 27 2012

Status

approved