OFFSET
1,5
COMMENTS
Table starts
.0....0......0........0..........0............0...............0
.0....2......6.......20.........68..........230.............778
.0....6.....34......208.......1272.........7818...........47998
.0...20....208.....2376......27346.......313944.........3607664
.0...68...1272....27346.....585880.....12582344.......270096962
.0..230...7818...313944...12582344....505135612.....20286249268
.0..778..47998..3607664..270096962..20286249268...1524513500124
.0.2632.294832.41448458.5799242344.814871303100.114623595936566
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..127
FORMULA
Empirical for column k:
k=2: a(n) = 3*a(n-1) +a(n-2) +a(n-3)
k=3: [order 10]
k=4: [order 31]
EXAMPLE
Some solutions for n=4 k=4
..0..1..2..3....0..1..2..3....0..1..0..1....0..3..0..1....0..3..2..3
..1..0..1..0....3..2..3..0....3..2..3..2....1..2..3..2....1..2..1..0
..2..3..0..3....2..3..2..1....1..0..1..0....3..0..2..1....2..3..0..3
..1..2..1..0....1..0..3..2....2..3..2..1....2..1..0..3....1..0..3..2
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Nov 03 2013
STATUS
approved