A205941 Number of (n+1) X 6 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.

656272, 4601832, 59081744, 692354440, 8605131924, 103395482496, 1315300941940, 16790996352160, 212427830322448, 2664535764436976, 33937686112451748, 433288983172028616, 5498445523621536928, 69569004855726603032

Offset

1,1

Comments

Column 5 of A205944.

Links

R. H. Hardin, Table of n, a(n) for n = 1..83

Example

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

Crossrefs

Sequence in context: A321064 A186614 A251279 * A365024 A287591 A308086

Adjacent sequences: A205938 A205939 A205940 * A205942 A205943 A205944

Keyword

nonn

Author

R. H. Hardin, Feb 01 2012

Status

approved