A205662 Number of 5X(n+1) 0..3 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors.

151824, 489984, 3227968, 41013960, 639426584, 10795687000, 186979308144, 3289591226152, 58404502956504, 1043705190013648, 18728820730088272, 337062306215296488, 6077539808376264136, 109725805552567745304

Offset

1,1

Comments

Row 4 of A205659.

Links

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

Example

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

Crossrefs

Sequence in context: A334005 A367841 A251987 * A205951 A205462 A248691

Adjacent sequences: A205659 A205660 A205661 * A205663 A205664 A205665

Keyword

nonn

Author

R. H. Hardin, Jan 30 2012

Status

approved