OFFSET
1,2
COMMENTS
Table starts
........0..............7...................84.......................756
........7............900................36312...................1213836
.......84..........36312..............5695536.................755009274
......756........1213836............755009274..............399002850360
.....6048.......36926640..........91506078732...........193171242190020
....45360.....1064495604.......10536802638018.........88942337408262936
...326592....29614748232.....1172354654705496......39591200828582988102
..2286144...803524526172...127313882431172946...17206536333078160595304
.15676416.21398721760608.13576906131836963556.7344924168583134203517654
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..84
FORMULA
Empirical for column k:
k=1: a(n) = 12*a(n-1) -36*a(n-2)
k=2: [order 6] for n>7
k=3: [order 20] for n>21
k=4: [order 64] for n>65
EXAMPLE
Some solutions for n=2 k=4
..0..3..1..6. .0..3..5..6. .0..0..0..5. .0..6..6..5. .0..2..2..6
..1..1..0..2. .3..5..6..3. .4..4..1..4. .3..5..2..6. .4..1..3..2
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Mar 08 2016
STATUS
approved