A210332 1/4 the number of (n+1)X6 0..3 arrays with every 2X2 subblock having two or three distinct clockwise edge differences

450903, 293095459, 184424586007, 117888703860657, 75219268772459800, 48035056424818579234, 30671441607393794461769, 19585465904867270616144137, 12506332508323045669879588659, 7985969726376926849664555077067

Offset

1,1

Comments

Column 5 of A210335

Links

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

Example

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

Crossrefs

Sequence in context: A224635 A234231 A227702 * A209714 A203785 A134960

Adjacent sequences: A210329 A210330 A210331 * A210333 A210334 A210335

Keyword

nonn

Author

R. H. Hardin Mar 20 2012

Status

approved