OFFSET
1,12
COMMENTS
Table starts
.0.0.0.......0..........0.............0................0..................0
.0.0.0.......2..........8............30..............108................386
.0.0.0......30........260..........2358............20430.............176774
.0.0.0.....348.......7072........149664..........3023532...........61203362
.0.0.0....3956.....186396.......9244260........434369516........20503681466
.0.0.0...44916....4899200.....570014364......62312057642......6859445695566
.0.0.0..509978..128706852...35145166536....8937075346246...2294186499807542
.0.0.0.5790456.3381000336.2166884610178.1281770005911328.767293632652220616
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..239
FORMULA
Empirical for column k:
k=4: a(n) = 15*a(n-1) -45*a(n-2) +42*a(n-3) -12*a(n-4) +a(n-5)
k=5: a(n) = 31*a(n-1) -126*a(n-2) +42*a(n-3) +79*a(n-4) -a(n-5) +8*a(n-6) for n>7
k=6: [order 22] for n>23
k=7: [order 39] for n>41
Empirical for row n:
n=2: a(n) = 4*a(n-1) -a(n-2) -2*a(n-3) for n>4
n=3: [order 14] for n>17
n=4: [order 59] for n>63
EXAMPLE
Some solutions for n=4 k=4
..0..1..2..1....0..1..2..0....0..1..2..0....0..1..2..0....0..1..2..0
..2..0..1..2....0..2..1..0....0..2..1..0....2..0..1..2....0..2..1..2
..2..1..0..2....2..0..2..1....1..2..2..1....2..1..0..2....0..1..0..2
..1..2..1..0....1..2..0..2....0..1..0..2....0..0..1..0....2..0..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Oct 25 2013
STATUS
approved