login
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
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
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
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 07 2012
STATUS
approved