OFFSET
1,2
COMMENTS
Table starts
...1......2........4..........8............16..............32
...2......8.......32........128...........512............2048
...4.....32......228.......1637.........11814...........85268
...8....128.....1652......21625........285613.........3778433
..16....512....11980.....286631.......6947036.......168799572
..32...2048....86916....3798398.....168833401......7530280825
..64...8192...630604...50347423....4104946296....336148647504
.128..32768..4575332..667361051...99807877377..15005851329729
.256.131072.33196332.8845980434.2426739457531.669868217032865
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..180
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) +2*a(n-2) +2*a(n-3) -20*a(n-4) -16*a(n-5)
k=4: [order 15]
k=5: [order 46]
Empirical for row n:
n=1: a(n) = 2*a(n-1)
n=2: a(n) = 4*a(n-1)
n=3: a(n) = 7*a(n-1) +4*a(n-2) -17*a(n-3) -3*a(n-4) -9*a(n-6) +14*a(n-7) for n>8
n=4: [order 15] for n>16
n=5: [order 64] for n>65
EXAMPLE
Some solutions for n=5 k=4
..0..0..1..0. .0..0..1..0. .0..0..1..0. .0..0..0..1. .0..0..1..0
..0..0..0..0. .0..0..1..0. .0..0..0..0. .0..1..0..1. .0..1..0..1
..0..1..1..1. .0..1..1..0. .0..1..1..1. .0..1..0..0. .0..0..1..0
..1..0..0..0. .1..1..0..1. .0..0..1..0. .1..1..0..0. .1..1..1..1
..0..0..1..0. .1..1..0..1. .0..0..1..1. .0..1..1..1. .1..1..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Apr 12 2018
STATUS
approved