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A206685 T(n,k) = number of (n+1) X (k+1) 0..2 arrays with every 2 X 3 or 3 X 2 subblock having an unequal number of clockwise and counterclockwise edge increases. 9
81, 306, 306, 1404, 1728, 1404, 5352, 9792, 9792, 5352, 24336, 55836, 89022, 55836, 24336, 93696, 317736, 645144, 645144, 317736, 93696, 422016, 1809324, 5747676, 7423464, 5747676, 1809324, 422016, 1639296, 10300608, 41876592, 84549024 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

......81......306.......1404.........5352.........24336...........93696

.....306.....1728.......9792........55836........317736.........1809324

....1404.....9792......89022.......645144.......5747676........41876592

....5352....55836.....645144......7423464......84549024.......965476188

...24336...317736....5747676.....84549024....1533200232.....22293930744

...93696..1809324...41876592....965476188...22293930744....514286765952

..422016.10300608..373903296..11019153780..401233408020..11814420790656

.1639296.58646916.2722587120.125824938768.5846128911096.271625729217060

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..143

EXAMPLE

Some solutions for n=4, k=3:

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

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

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

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

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

CROSSREFS

Sequence in context: A237092 A206277 A236018 * A206270 A236011 A206678

Adjacent sequences:  A206682 A206683 A206684 * A206686 A206687 A206688

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 11 2012

STATUS

approved

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Last modified August 12 09:17 EDT 2020. Contains 336438 sequences. (Running on oeis4.)