OFFSET
1,2
COMMENTS
Table starts
...1.....2.......4.........8..........16............32..............64
...2.....8......25........81.........264...........857............2785
...4....25.....122.......578........2753.........13147...........62781
...8....81.....578......4104.......29084........205754.........1455916
..16...264....2753.....29084......306749.......3229199........33986995
..32...857...13147....205754.....3229199......50525365.......790390105
..64..2785...62781...1455916....33986995.....790390105.....18384693920
.128..9050..299758..10304849...357678069...12362251350....427494590110
.256.29407.1431221..72937769..3764378216..193349390970...9939634161916
.512.95557.6833530.516249590.39618451066.3024029579084.231101074704277
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..263
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1)
k=2: a(n) = 3*a(n-1) +a(n-2) -2*a(n-4)
k=3: a(n) = 4*a(n-1) +3*a(n-2) +2*a(n-3) +6*a(n-4) +2*a(n-5) -a(n-6)
k=4: [order 22]
k=5: [order 54]
EXAMPLE
Some solutions for n=4 k=4
..0..0..0..1....0..1..1..0....0..0..1..1....0..1..0..1....0..0..0..1
..1..1..1..0....0..0..1..0....1..0..1..0....0..1..0..0....0..1..1..0
..0..0..1..0....1..0..1..0....0..1..0..0....1..0..1..0....0..1..0..1
..0..1..0..1....1..0..1..0....0..0..1..1....1..0..0..0....0..1..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Apr 06 2014
STATUS
approved