A206511 Number of (n+1)X8 0..2 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards

3337695, 997160112, 224125465767, 41561685861258, 6781274991216915, 1009956457230227994, 140477097763717169946, 18526867118888845651956, 2341223589530713890986871

Offset

1,1

Comments

Column 7 of A206512

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Sequence in context: A244574 A250675 A242608 * A238153 A083635 A116306

Adjacent sequences: A206508 A206509 A206510 * A206512 A206513 A206514

Keyword

nonn

Author

R. H. Hardin Feb 08 2012

Status

approved