OFFSET
1,2
COMMENTS
Table starts
...1.....2.......4........8........16..........32............64............128
...2.....8......20.......52.......136.........360...........960...........2576
...4....25......78......230.......801........2764..........9367..........31703
...8....81.....420.....1596......7951.......43448........222205........1111647
..16...264....2088....10128.....72890......656838.......5122419.......37600463
..32...857....9916....59086....613788.....8883058.....104285205.....1111578890
..64..2785...49740...377020...5520182...130480638....2346396384....36337215370
.128..9050..245904..2366996..49761178..1939853204...53305999504..1203039901394
.256.29407.1204720.14512973.438900203.28081434251.1176790967846.38683326206589
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) = 3*a(n-1) +a(n-2) -2*a(n-4)
k=3: [order 14]
k=4: [order 49] for n>51
Empirical for row n:
n=1: a(n) = 2*a(n-1)
n=2: a(n) = 4*a(n-1) -2*a(n-2) -4*a(n-3) for n>4
n=3: [order 15] for n>16
n=4: [order 63] for n>65
EXAMPLE
Some solutions for n=5 k=4
..0..0..1..0. .0..0..1..0. .0..0..0..0. .0..1..0..0. .0..1..0..1
..0..1..1..0. .1..0..1..0. .1..0..1..0. .0..1..0..1. .0..0..1..0
..1..1..1..0. .1..1..1..0. .1..1..1..0. .1..0..0..1. .0..1..0..1
..1..0..1..0. .0..0..1..1. .1..0..0..0. .0..1..1..1. .0..1..1..1
..1..0..0..0. .1..1..0..1. .1..0..1..0. .0..1..0..1. .0..1..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Apr 25 2018
STATUS
approved