OFFSET
1,5
COMMENTS
Table starts
..0.....1........1..........2.............3..............6..............11
..1.....2........5.........17............56............195.............691
..1.....5.......24........152...........935...........6150...........40504
..2....17......152.......1670.........19619.........238607.........2939027
..3....56......935......19619........434444........9958520.......230889822
..6...195.....6150.....238607.......9958520......428855442.....18742128588
.11...691....40504....2939027.....230889822....18742128588...1546330012544
.22..2476...269481...36470565....5392206371...825015103540.128518782423157
.43..8941..1797120..454209512..126282435834.36426835430201
.86.32393.12006500.5665536042.2961490680709
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..112
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1) +a(n-2) -2*a(n-3) for n>4
k=2: a(n) = 4*a(n-1) +2*a(n-2) -11*a(n-3) -6*a(n-4) +8*a(n-5) for n>6
k=3: [order 26] for n>27
EXAMPLE
Some solutions for n=4 k=4
..0..1..1..1....0..1..2..0....0..1..0..2....0..1..2..0....0..1..0..1
..0..0..1..0....0..1..2..0....0..1..0..2....0..1..2..0....0..1..0..1
..0..2..2..0....2..2..1..1....2..1..1..1....0..2..1..0....2..2..0..1
..1..1..1..1....0..0..2..2....2..1..0..0....0..2..1..0....0..0..2..2
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Apr 16 2014
STATUS
approved