A206186 Number of (n+1) X 7 0..3 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and the same number of counterclockwise edge increases as its vertical neighbors.

7854572, 406202048, 78597249508, 23825180259760, 7481908870312588, 2363371012699739212, 747343697917253418576, 236405079530904298698860, 74790605792946446088286728, 23662388118003270037770957312

Offset

1,1

Comments

Column 6 of A206188.

Links

R. H. Hardin, Table of n, a(n) for n = 1..23

Example

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

Crossrefs

Sequence in context: A347424 A214194 A205657 * A205368 A235222 A239588

Adjacent sequences: A206183 A206184 A206185 * A206187 A206188 A206189

Keyword

nonn

Author

R. H. Hardin, Feb 04 2012

Status

approved