A205940 Number of (n+1) X 5 0..3 arrays with no 2 X 2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases in its adjacent leftward or upward neighbors.

91440, 620988, 6705048, 70027468, 692354440, 6909160028, 72541287824, 778680028616, 7889326861776, 81346754344248, 853506521827200, 9001326523610412, 92292464888517816, 960070329464841064

Offset

1,1

Comments

Column 4 of A205944.

Links

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

Example

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

Crossrefs

Sequence in context: A253838 A253845 A253932 * A204881 A330159 A202590

Adjacent sequences: A205937 A205938 A205939 * A205941 A205942 A205943

Keyword

nonn

Author

R. H. Hardin, Feb 01 2012

Status

approved