OFFSET
1,1
COMMENTS
Table starts
.......81........344........1512..........6444............28060
......344.......1960.......10912.........59398...........321368
.....1512......10912.......78302........495192..........3614408
.....6444......59398......495192.......4906388.........51874196
....28060.....321368.....3614408......51874196........876962762
...119928....1787690....26325004.....598026962......14741011576
...519616....9900936...206365422....6575406016.....259092046806
..2226672...54118764..1454459216...73548401748....4458209861208
..9647072..295217284.10985640382..807473668652...79623947375854
.41385504.1633131298.80383145484.9376937202644.1369088170048400
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..180
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 10] for n>11
k=2: [order 20] for n>22
k=3: [order 73] for n>78
EXAMPLE
Some solutions for n=3, k=4
..0..1..0..2..1....0..1..2..0..1....0..0..1..2..0....0..0..1..1..2
..0..1..2..1..1....0..2..0..0..1....2..1..0..0..2....0..1..0..2..1
..0..2..0..1..0....2..1..0..0..2....0..2..1..1..0....1..0..0..0..1
..2..1..1..1..2....1..1..0..1..2....0..0..2..1..0....2..1..1..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 19 2014
STATUS
approved