A209527 T(n,k)=Number of nXk 0..7 arrays with every 2X2 subblock containing exactly one value repeat, and new values 0..7 introduced in row major order.

1, 2, 2, 5, 6, 5, 15, 57, 57, 15, 52, 700, 2027, 700, 52, 203, 10677, 107693, 107693, 10677, 203, 877, 193676, 7700397, 27323948, 7700397, 193676, 877, 4140, 4054358, 687132348, 9700576474, 9700576474, 687132348, 4054358, 4140, 21146, 95534880

Offset: 1

Author

R. H. Hardin Mar 10 2012

Keywords

• nonn
• tabl

Comments

Table starts

....1........2.............5.................15.......................52

....2........6............57................700....................10677

....5.......57..........2027.............107693..................7700397

...15......700........107693...........27323948...............9700576474

...52....10677.......7700397.........9700576474...........16484968944748

..203...193676.....687132348......4194606038254........31813625228165210

..877..4054358...71519658191...2002617518101082.....64398780661554524050

.4140.95534880.8190834795146.999998646599976052.132601740316897661044124

Examples

			Some solutions for n=5 k=3
..0..0..0....0..0..0....0..0..0....0..0..1....0..0..1....0..0..0....0..1..0
..1..2..1....1..2..1....1..2..1....1..2..0....1..2..2....1..2..3....0..2..0
..2..0..0....0..0..0....0..0..1....1..0..3....0..0..1....1..0..0....0..1..0
..0..3..1....1..2..1....1..2..0....0..2..0....1..2..0....0..2..3....0..2..1
..3..1..0....0..1..0....0..0..1....0..1..0....0..0..1....2..3..0....1..2..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..84

Crossrefs

Column 1 is A099263