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A206414 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 equal number of clockwise and counterclockwise edge increases. 9
81, 423, 423, 2457, 5199, 2457, 15087, 69585, 69585, 15087, 94761, 953865, 2073999, 953865, 94761, 600519, 13148043, 62351943, 62351943, 13148043, 600519, 3818649, 181467207, 1876995285, 4099250889, 1876995285, 181467207, 3818649, 24314127 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.......81.........423...........2457.............15087.................94761

......423........5199..........69585............953865..............13148043

.....2457.......69585........2073999..........62351943............1876995285

....15087......953865.......62351943........4099250889..........269845754715

....94761....13148043.....1876995285......269845754715........38883964087761

...600519...181467207....56515649709....17769571483479......5607670598448153

..3818649..2505335985..1701726564411..1170258128101905....808953988411331487

.24314127.34591087977.51240524315871.77072446958972853.116711118064834566675

LINKS

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

EXAMPLE

Some solutions for n=4, k=3:

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

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

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

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

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

CROSSREFS

Sequence in context: A205986 A206668 A238180 * A205979 A206661 A238173

Adjacent sequences:  A206411 A206412 A206413 * A206415 A206416 A206417

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 07 2012

STATUS

approved

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Last modified December 7 16:40 EST 2021. Contains 349581 sequences. (Running on oeis4.)