OFFSET
1,2
COMMENTS
Table starts
......1.........3............9..............27.................81
......4........21..........129.............771...............4629
.....16.......147.........1881...........22971.............283131
.....64......1029........27441..........685251...........17429409
....256......7203.......400329........20442651.........1074244299
...1024.....50421......5840289.......609853251........66226131273
...4096....352947.....85202361.....18193384251......4082986991091
..16384...2470629...1242993681....542752261251....251727862281441
..65536..17294403..18133691049..16191600916251..15519780149309307
.262144.121060821.264547403649.483034266181251.956841601733733945
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..199
FORMULA
Empirical for column k:
k=1: a(n) = 4*a(n-1)
k=2: a(n) = 7*a(n-1)
k=3: a(n) = 15*a(n-1) -6*a(n-2)
k=4: a(n) = 31*a(n-1) -35*a(n-2) +5*a(n-3)
k=5: [order 10]
k=6: [order 21]
Empirical for row n:
n=1: a(n) = 3*a(n-1)
n=2: a(n) = 5*a(n-1) +6*a(n-2)
n=3: a(n) = 12*a(n-1) +7*a(n-2) -40*a(n-3) +12*a(n-4)
n=4: [order 10]
n=5: [order 26] for n>27
n=6: [order 86] for n>87
EXAMPLE
Some solutions for n=3 k=4
..0..2..3..2....0..1..3..3....0..1..0..2....0..1..0..0....0..2..0..2
..2..2..3..3....0..1..1..1....3..2..0..1....0..2..0..0....2..0..2..2
..0..2..3..3....0..1..0..0....2..2..3..2....0..2..0..2....1..0..2..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 02 2013
STATUS
approved