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A206150 T(n,k) = number of (n+1) X (k+1) 0..2 arrays with every 2 X 3 or 3 X 2 subblock having exactly three counterclockwise and three clockwise edge increases. 9
81, 60, 60, 162, 246, 162, 486, 1122, 1122, 486, 1458, 5118, 7812, 5118, 1458, 4374, 23346, 54450, 54450, 23346, 4374, 13122, 106494, 379602, 580986, 379602, 106494, 13122, 39366, 485778, 2646540, 6204438, 6204438, 2646540, 485778, 39366, 118098 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

....81......60.......162........486.........1458...........4374

....60.....246......1122.......5118........23346.........106494

...162....1122......7812......54450.......379602........2646540

...486....5118.....54450.....580986......6204438.......66274542

..1458...23346....379602....6204438....101596896.....1664748270

..4374..106494...2646540...66274542...1664748270....41869995708

.13122..485778..18451530..707982258..27284864220..1053631126386

.39366.2215902.128643282.7563227466.447232269654.26519876081106

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..364

EXAMPLE

Some solutions for n=4, k=3:

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

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

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

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

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

CROSSREFS

Sequence in context: A147674 A033401 A143756 * A206143 A087410 A177842

Adjacent sequences:  A206147 A206148 A206149 * A206151 A206152 A206153

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 04 2012

STATUS

approved

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Last modified January 26 02:39 EST 2022. Contains 350572 sequences. (Running on oeis4.)