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A207791 Number of (n+1) X (n+1) 0..3 arrays with every 2 X 3 or 3 X 2 subblock having an unequal number of clockwise and counterclockwise edge increases. 0
256, 37408, 22773384, 51169273632, 507960770486000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A207799.

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for n=3:

..1..2..1..2....0..2..0..1....1..1..3..2....2..0..3..0....2..0..3..1

..3..0..1..2....2..1..0..0....0..3..3..0....0..2..2..1....1..2..2..3

..1..1..3..2....0..1..1..2....1..0..2..1....0..3..2..0....0..2..0..3

..2..1..0..1....0..0..2..1....1..2..2..0....1..0..2..2....2..2..1..2

CROSSREFS

Sequence in context: A221091 A205458 A206744 * A018798 A017320 A187455

Adjacent sequences:  A207788 A207789 A207790 * A207792 A207793 A207794

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 20 2012

STATUS

approved

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Last modified June 29 21:38 EDT 2022. Contains 354913 sequences. (Running on oeis4.)