A209951 T(n,k)=Half the number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having at most one duplicate clockwise edge difference

34, 258, 258, 1956, 4975, 1956, 14832, 95794, 95794, 14832, 112464, 1845126, 4681176, 1845126, 112464, 852768, 35537484, 228881560, 228881560, 35537484, 852768, 6466176, 684469520, 11189540644, 28414622976, 11189540644, 684469520

Offset

1,1

Comments

Table starts

.......34..........258.............1956...............14832

......258.........4975............95794.............1845126

.....1956........95794..........4681176...........228881560

....14832......1845126........228881560.........28414622976

...112464.....35537484......11189540644.......3526904366260

...852768....684469520.....547050257224.....437792367422004

..6466176..13183187396...26744766723116...54342179402121844

.49030272.253914272972.1307528820052772.6745399989408922240

Links

R. H. Hardin, Table of n, a(n) for n = 1..264

Example

Some solutions for n=4 k=3
..2..0..1..2....1..0..0..0....0..0..2..0....1..2..1..1....0..0..2..1
..2..1..1..1....0..2..2..1....0..2..2..2....1..1..1..0....2..0..1..1
..1..1..2..2....0..0..2..0....1..1..0..2....1..2..1..2....0..0..2..0
..2..2..0..1....0..2..1..2....2..0..2..1....0..2..2..2....2..2..1..1
..0..2..2..1....1..1..1..1....1..2..1..1....2..1..0..1....2..1..1..2

Crossrefs

Sequence in context: A302474 A183319 A190422 * A209944 A371403 A081219

Adjacent sequences: A209948 A209949 A209950 * A209952 A209953 A209954

Keyword

nonn,tabl

Author

R. H. Hardin Mar 16 2012

Status

approved