OFFSET
1,2
COMMENTS
Table starts
...1....2......4.......6.......10.........16..........26............42
...2....6.....14......30.......66........146.........322...........710
...4...14.....46.....130......410.......1194........3722.........10942
...6...30....130.....534.....2230.......9310.......38870........162278
..10...66....410....2230....13538......75462......457234.......2561258
..16..146...1194....9310....75462.....612364.....4990482......40661766
..26..322...3722...38870...457234....4990482....59448262.....653375842
..42..710..10942..162278..2561258...40661766...653375842...10508498862
..68.1566..33806..677510.15454594..331554282..7789998594..169516703810
.110.3454.100142.2828606.86936482.2703411654.85859588738.2735194512174
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..312
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1) +a(n-2) for n>3
k=2: a(n) = 2*a(n-1) +a(n-3)
k=3: a(n) = a(n-1) +7*a(n-2) -3*a(n-3) +3*a(n-4) -7*a(n-5) +2*a(n-6) -2*a(n-7) +2*a(n-8)
k=4: a(n) = 4*a(n-1) +a(n-2) -4*a(n-4) -3*a(n-5) +a(n-7) +3*a(n-8) -a(n-11)
k=5: [order 20] for n>22
k=6: [order 42]
EXAMPLE
Some solutions for n=5 k=4
..2..1..0..1....2..1..2..1....2..0..1..0....2..1..2..1....1..2..1..2
..1..0..1..2....1..2..1..2....0..1..2..1....1..0..1..2....0..1..0..1
..0..1..0..1....2..1..2..1....1..0..1..2....0..1..2..1....1..0..1..2
..1..2..1..2....1..0..1..0....2..1..2..1....1..0..1..2....2..1..2..1
..2..1..2..1....2..1..2..1....1..0..1..0....2..1..2..1....1..0..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Nov 17 2013
STATUS
approved