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A205520 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock differing from each horizontal or vertical neighbor 9
81, 360, 360, 1683, 2412, 1683, 7572, 17166, 17166, 7572, 35577, 122232, 205803, 122232, 35577, 160218, 864948, 2343348, 2343348, 864948, 160218, 750426, 6127554, 27630789, 44160240, 27630789, 6127554, 750426, 3387924, 43434216, 312856410 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

......81.......360........1683..........7572...........35577............160218

.....360......2412.......17166........122232..........864948...........6127554

....1683.....17166......205803.......2343348........27630789.........312856410

....7572....122232.....2343348......44160240.......825828828.......15535355076

...35577....864948....27630789.....825828828.....25618992453......764670893556

..160218...6127554...312856410...15535355076....764670893556....37886453633808

..750426..43434216..3703472454..291860355624..23817299324910..1873315597879056

.3387924.307791390.41913844878.5480789967924.709372088422890.92643820648532838

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..144

EXAMPLE

Some solutions for n=4 k=3

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

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

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

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

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

CROSSREFS

Sequence in context: A236997 A236065 A206676 * A236990 A236058 A205513

Adjacent sequences:  A205517 A205518 A205519 * A205521 A205522 A205523

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 28 2012

STATUS

approved

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Last modified August 10 10:09 EDT 2022. Contains 356039 sequences. (Running on oeis4.)