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A210156 T(n,k)=1/4 the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences 9
57, 820, 820, 11783, 42689, 11783, 169343, 2219034, 2219034, 169343, 2433709, 115368738, 417014920, 115368738, 2433709, 34976109, 5997955680, 78387305947, 78387305947, 5997955680, 34976109, 502659771, 311831135649, 14734218092801 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.........57.............820................11783.....................169343

........820...........42689..............2219034..................115368738

......11783.........2219034............417014920................78387305947

.....169343.......115368738..........78387305947.............53276322556234

....2433709......5997955680.......14734218092801..........36208249913281496

...34976109....311831135649.....2769555432882273.......24608360596681275093

..502659771..16211961522199...520586406508252346....16724671741551847807857

.7223984325.842852674077118.97853330660544192224.11366651677032505181918785

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..180

EXAMPLE

Some solutions for n=4 k=3

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

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

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

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

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

CROSSREFS

Sequence in context: A060891 A241967 A098995 * A210149 A254783 A233370

Adjacent sequences:  A210153 A210154 A210155 * A210157 A210158 A210159

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Mar 18 2012

STATUS

approved

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Last modified December 7 09:15 EST 2021. Contains 349574 sequences. (Running on oeis4.)