OFFSET
1,2
COMMENTS
Table starts
...1......2........4...........8............16...............32
...2......8.......32.........128...........512.............2048
...4.....32......240........1808.........13616...........102544
...8....128.....1808.......25872........369936..........5289488
..16....512....13616......369936......10033408........272151040
..32...2048...102544.....5289488.....272151040......14004742144
..64...8192...772272....75632400....7381982784.....720677122368
.128..32768..5816080..1081436176..200232929792...37085631944448
.256.131072.43801648.15463010576.5431228387584.1908405940870656
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..364
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1)
k=2: a(n) = 4*a(n-1)
k=3: a(n) = 7*a(n-1) +4*a(n-2)
k=4: a(n) = 13*a(n-1) +20*a(n-2) -16*a(n-3) -64*a(n-4)
k=5: [order 8]
k=6: [order 20]
k=7: [order 46]
EXAMPLE
Some solutions for n=5 k=4
..0..0..0..0. .0..0..0..1. .0..0..0..0. .0..0..0..1. .0..0..0..0
..0..1..0..1. .1..0..0..1. .0..1..1..1. .0..1..0..0. .0..0..1..1
..0..1..1..0. .0..1..1..0. .0..1..1..0. .0..1..0..1. .0..1..1..1
..1..0..1..1. .1..0..1..0. .1..0..0..1. .1..1..1..1. .0..1..0..0
..0..0..0..0. .1..1..1..0. .1..1..1..0. .1..0..1..0. .0..0..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Mar 26 2018
STATUS
approved