OFFSET
1,2
COMMENTS
Table starts
...1....2.....4.......8.......16.........32...........64............128
...2....7....13......29.......73........157..........353............869
...4...13....20......45......148........529.........1747...........5797
...8...29....45.....211.....1537.......8135........41485.........237494
..16...73...148....1537....15171.....120072......1008622........9188573
..32..157...529....8135...120072....1676663.....23451403......352887797
..64..353..1747...41485..1008622...23451403....543024998....13524308534
.128..869..5797..237494..9188573..352887797..13524308534...558233828840
.256.1993.19584.1335377.81099064.5253872974.332995274077.22733280314275
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) -5*a(n-2) +10*a(n-3) -24*a(n-4) +16*a(n-5) for n>6
k=3: [order 16] for n>17
k=4: [order 55] for n>59
EXAMPLE
Some solutions for n=5 k=4
..0..1..0..0. .0..0..0..1. .0..1..0..1. .0..1..0..0. .0..0..1..0
..1..1..0..1. .1..0..0..0. .1..1..0..0. .1..1..0..1. .1..1..1..0
..0..0..0..0. .1..1..0..0. .1..1..1..1. .1..1..1..1. .0..1..1..1
..1..0..0..0. .1..1..0..0. .1..0..1..0. .1..1..1..1. .0..1..1..1
..0..1..1..0. .0..1..0..1. .0..0..1..0. .0..1..1..0. .1..0..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Mar 02 2018
STATUS
approved