OFFSET
1,2
COMMENTS
Table starts
.....0..........7..............84.................756.....................6048
.....7........840...........45360.............2005080.................80724000
....84......45360........12377400..........2801265390.............579818225700
...756....2005080......2801265390.......3263186052840.........3482459146452300
..6048...80724000....579818225700....3482459146452300.....19179756370570398120
.45360.3078006120.113873466835170.3529041005211929340.100348236778061082424740
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..112
FORMULA
Empirical for column k:
k=1: a(n) = 12*a(n-1) -36*a(n-2)
k=2: a(n) = 62*a(n-1) -961*a(n-2) for n>3
k=3: a(n) = 330*a(n-1) -28773*a(n-2) +255420*a(n-3) -599076*a(n-4) for n>5
k=4: [order 6] for n>7
k=5: [order 14] for n>15
k=6: [order 26] for n>27
EXAMPLE
Some solutions for n=2 k=4
..2..4..3..2. .3..3..4..4. .3..4..3..6. .5..3..3..0. .2..3..4..5
..0..4..5..2. .0..5..4..0. .0..5..3..1. .0..2..6..4. .0..2..4..3
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Mar 07 2016
STATUS
approved