OFFSET
1,2
COMMENTS
Table starts
...1......2........4...........8............16..............32
...2......8.......32.........128...........512............2048
...4.....32......232........1690.........12340...........90112
...8....128.....1696.......22756........306448.........4129588
..16....512....12408......306767.......7626768.......189848373
..32...2048....90800.....4136339.....189837638......8727953509
..64...8192...664512....55781418....4726484016....401405461699
.128..32768..4863312...752277525..117683035940..18461936404456
.256.131072.35593024.10145443043.2930192820802.849140799884830
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) = 8*a(n-1) -4*a(n-2) -2*a(n-3) -36*a(n-4) -16*a(n-5)
k=4: [order 15]
k=5: [order 47]
Empirical for row n:
n=1: a(n) = 2*a(n-1)
n=2: a(n) = 4*a(n-1)
n=3: a(n) = 8*a(n-1) -40*a(n-3) +20*a(n-4) +8*a(n-5) -3*a(n-6) +32*a(n-7) for n>8
n=4: [order 15] for n>16
n=5: [order 68] for n>69
EXAMPLE
Some solutions for n=5 k=4
..0..0..0..0. .0..0..0..1. .0..0..1..0. .0..0..0..0. .0..0..0..1
..1..1..1..0. .1..1..0..1. .0..1..0..1. .0..1..0..0. .0..0..1..0
..0..0..1..1. .0..1..0..1. .1..0..0..0. .1..1..1..0. .0..0..1..1
..0..1..1..0. .0..1..0..0. .1..1..1..1. .0..1..1..0. .0..0..0..1
..0..0..0..1. .0..0..1..1. .1..1..0..1. .0..0..1..1. .0..0..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Apr 24 2018
STATUS
approved