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A209913 T(n,k)=Half the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having two or four distinct clockwise edge differences 9
62, 562, 562, 5008, 13098, 5008, 44770, 295448, 295448, 44770, 399930, 6711168, 16664508, 6711168, 399930, 3573388, 152153160, 948609890, 948609890, 152153160, 3573388, 31926146, 3452051294, 53888573444, 135833193008, 53888573444 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

........62...........562.............5008................44770

.......562.........13098...........295448..............6711168

......5008........295448.........16664508............948609890

.....44770.......6711168........948609890.........135833193008

....399930.....152153160......53888573444.......19391662870652

...3573388....3452051294....3063300023090.....2771380588485262

..31926146...78298719958..174099838817590...395928291655518846

.285247762.1776153151954.9895452271443782.56572313966664992566

LINKS

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

EXAMPLE

Some solutions for n=4 k=3

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

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

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

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

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

CROSSREFS

Sequence in context: A020191 A212834 A202959 * A209906 A069473 A249530

Adjacent sequences:  A209910 A209911 A209912 * A209914 A209915 A209916

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Mar 15 2012

STATUS

approved

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Last modified January 28 00:29 EST 2022. Contains 350654 sequences. (Running on oeis4.)