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A205638 Number of (n+1)X5 0..3 arrays with every 2 X 2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases in its adjacent leftward and upward neighbors. 1
198688, 5079336, 211610280, 11786800328, 727845846776, 46738310925116, 3046981775525932, 199800076245538628, 13132583312930472884, 864075508058435050420, 56880317083235486594612, 3745208397898734696110340 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A205642.

LINKS

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

EXAMPLE

Some solutions for n=4:

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

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

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

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

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

CROSSREFS

Sequence in context: A249358 A290780 A255782 * A031687 A234034 A154531

Adjacent sequences:  A205635 A205636 A205637 * A205639 A205640 A205641

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 29 2012

STATUS

approved

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Last modified June 17 15:38 EDT 2021. Contains 345085 sequences. (Running on oeis4.)