OFFSET
1,1
COMMENTS
Table starts
......384.......2793........19320.........139968.........997740........7214139
.....2793......30453.......306680........3255537.......33858062......357165303
....19320.....306680......4385530.......66702186......990142582....14924920644
...139968....3255537.....66702186.....1470299799....31496378270...686625400736
...997740...33858062....990142582....31496378270...973958225703.30642385604286
..7214139..357165303..14924920644...686625400736.30642385604286
.51847038.3740990254.223188511528.14835814827267
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..60
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 18]
EXAMPLE
Some solutions for n=2 k=4
..0..0..1..0..1..0....0..1..1..0..0..1....0..0..1..0..1..0....0..0..1..0..0..2
..1..1..2..1..2..2....1..2..2..1..2..1....1..1..2..1..1..0....2..3..3..1..1..0
..0..0..2..0..2..0....1..2..2..0..0..3....1..0..1..0..0..3....0..0..1..0..1..0
..0..1..0..0..3..0....2..1..1..0..0..1....2..0..2..0..0..3....0..0..3..0..0..3
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 24 2014
STATUS
approved