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A206752 T(n,k) = number of (n+1) X (k+1) 0..3 arrays with every 2 X 3 or 3 X 2 subblock having an equal number of clockwise and counterclockwise edge increases. 9
256, 1888, 1888, 15680, 36384, 15680, 139744, 793152, 793152, 139744, 1289472, 18037344, 43894936, 18037344, 1289472, 12105120, 415429504, 2475217568, 2475217568, 415429504, 12105120, 114566336, 9604042208, 140074119984 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts:

........256..........1888.............15680................139744

.......1888.........36384............793152..............18037344

......15680........793152..........43894936............2475217568

.....139744......18037344........2475217568..........343128343904

....1289472.....415429504......140074119984........47661729160320

...12105120....9604042208.....7932406245672......6623662914493232

..114566336..222273709440...449274384195312....920635927293402816

.1088409696.5145902199776.25446640113989392.127966527042768090112

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..84

EXAMPLE

Some solutions for n=4, k=3:

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

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

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

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

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

CROSSREFS

Sequence in context: A237574 A237569 A237544 * A237539 A206745 A237791

Adjacent sequences: A206749 A206750 A206751 * A206753 A206754 A206755

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 12 2012

STATUS

approved

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Last modified November 27 00:20 EST 2022. Contains 358362 sequences. (Running on oeis4.)