A206319 Number of (n+1)X(n+1) 0..3 arrays with every 2X3 or 3X2 subblock having exactly three clockwise edge increases

256, 16892, 10258408, 30018231756, 419904864999804, 28153923918860656368, 9069132565961324534394832, 14057869699230976600019746011216

Offset

1,1

Comments

Diagonal of A206327

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A224206 A238064 A235964 * A216397 A090650 A206181

Adjacent sequences: A206316 A206317 A206318 * A206320 A206321 A206322

Keyword

nonn

Author

R. H. Hardin Feb 06 2012

Status

approved