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A205662 Number of 5X(n+1) 0..3 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors. 1
151824, 489984, 3227968, 41013960, 639426584, 10795687000, 186979308144, 3289591226152, 58404502956504, 1043705190013648, 18728820730088272, 337062306215296488, 6077539808376264136, 109725805552567745304 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A205659.

LINKS

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

EXAMPLE

Some solutions for n=4:

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

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

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

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

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

CROSSREFS

Sequence in context: A344941 A334005 A251987 * A205951 A205462 A248691

Adjacent sequences:  A205659 A205660 A205661 * A205663 A205664 A205665

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 30 2012

STATUS

approved

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Last modified July 3 16:24 EDT 2022. Contains 355055 sequences. (Running on oeis4.)