OFFSET
1,1
COMMENTS
Table starts
....2.......4..........8............16..............32..............64
....4......18.........78...........334............1418............6002
....8......78........722..........6376...........55680..........483926
...16.....334.......6376........115194.........2044806........36002110
...32....1418......55680.......2044806........73440130......2607237326
...64....6002.....483926......36002110......2607237326....186214281670
..128...25374....4195892.....631121148.....92003133794..13200773101956
..256..107230...36331704...11038084086...3236101836296.932020621734728
..512..453098..314419494..192823850946.113624636162418
.1024.1914498.2720368268.3366365227614
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..97
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1)
k=2: a(n) = 6*a(n-1) -7*a(n-2) -4*a(n-3) +8*a(n-4)
k=3: [order 23]
EXAMPLE
Some solutions for n=4 k=4
..2..0..0..0....0..0..0..0....2..0..0..2....0..0..0..2....2..2..2..0
..0..0..2..0....0..0..2..2....0..3..2..0....2..0..0..0....2..2..2..0
..2..0..2..2....2..2..2..2....2..1..1..2....2..2..0..0....0..3..2..0
..0..0..0..2....2..0..2..3....2..2..2..2....2..0..0..0....2..2..2..2
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Apr 04 2014
STATUS
approved