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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. 1
7854572, 406202048, 78597249508, 23825180259760, 7481908870312588, 2363371012699739212, 747343697917253418576, 236405079530904298698860, 74790605792946446088286728, 23662388118003270037770957312 (list; graph; refs; listen; history; text; internal format)
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: A319809 A214194 A205657 * A205368 A235222 A239588

Adjacent sequences:  A206183 A206184 A206185 * A206187 A206188 A206189

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 04 2012

STATUS

approved

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Last modified February 18 09:39 EST 2020. Contains 332011 sequences. (Running on oeis4.)