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

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

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 A362458 A069473

Adjacent sequences: A209910 A209911 A209912 * A209914 A209915 A209916

Keyword

nonn,tabl

Author

R. H. Hardin Mar 15 2012

Status

approved