OFFSET
1,1
COMMENTS
Table starts
.....16........48..........144.............432...............1296
.....48.......256.........1376............7424..............40160
....144......1376........14112..........147520............1562176
....432......7424.......147520.........3099264...........67182208
...1296.....40160......1562176........67182208.........3049973040
...3888....217600.....16693920......1485628224.......142702806112
..11664...1180256....179532768.....33277934848......6790055219264
..34992...6405888...1939216640....751557814208....326095786136512
.104976..34782688..21008925952..17060996532992..15740601974728144
.314928.188912640.228065409888.388541047749184.761894144429277728
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..220
FORMULA
Empirical for column k:
k=1: a(n) = 3*a(n-1)
k=2: a(n) = 8*a(n-1) -11*a(n-2) -16*a(n-3)
k=3: a(n) = 15*a(n-1) -18*a(n-2) -310*a(n-3) +167*a(n-4) +475*a(n-5) -244*a(n-6) -100*a(n-7) +48*a(n-8)
k=4: [order 14]
k=5: [order 36]
k=6: [order 75]
EXAMPLE
Some solutions for n=3 k=4
..7.15..7..0....1..0..7..0...10..8.14.12....8.14.12.10....9..1..9.11
..6..7..6..7....2..1..0..7...12.10.12.14...14.12.10..8....1..9.11..9
..7.15..7.15...10..2..1..0...14..8.14..8....8.14.12.14....9..1..9..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Mar 20 2013
STATUS
approved