OFFSET
1,5
COMMENTS
Table starts
.0......0..........0.............0.................0.....................0
.0......9.........52...........364..............2523.................17424
.0.....52........866.........16583............316432...............6031565
.0....364......16583........912870..........49996267............2732579072
.0...2523.....316432......49996267........7830217270.........1224179323009
.0..17424....6031565....2732579072.....1224179323009.......547419319384315
.0.120462..114975158..149393609720...191436065235070....244860735613038021
.0.832701.2191741025.8167589147618.29936909309888730.109526799967682916321
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..144
FORMULA
Empirical for column k:
k=2: a(n) = 6*a(n-1) +6*a(n-2) +3*a(n-3) -6*a(n-4)
k=3: [order 16]
k=4: [order 38]
EXAMPLE
Some solutions for n=3 k=4
..0..2..0..2. .0..1..0..2. .0..1..0..2. .0..0..2..0. .0..1..1..0
..1..0..1..0. .1..2..2..0. .1..2..0..2. .1..0..1..1. .2..1..2..0
..0..2..2..1. .0..1..2..1. .0..0..2..2. .2..2..1..0. .1..1..2..2
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Nov 08 2016
STATUS
approved