A222654 T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..3 order.
1, 1, 1, 2, 7, 2, 11, 60, 60, 11, 34, 724, 1229, 724, 34, 131, 7364, 61757, 61757, 7364, 131, 438, 84816, 1073368, 5024944, 1073368, 84816, 438, 2150, 927152, 58834301, 411489189, 411489189, 58834301, 927152, 2150, 7676, 10585088, 1009942505
Offset: 1
Examples
Some solutions for n=3 k=4 ..0..0..1..0....0..1..2..3....0..1..0..2....0..1..2..1....0..1..0..0 ..0..2..2..3....2..2..2..0....2..0..0..1....2..3..0..2....2..3..2..3 ..3..2..1..0....0..2..1..2....3..0..2..3....0..3..2..2....0..0..1..1
Links
- R. H. Hardin, Table of n, a(n) for n = 1..59
Comments