OFFSET
1,2
COMMENTS
Table starts
...1......2.......4.........8..........16............32..............64
...2......8......31.......121.........472..........1841............7181
...4.....31.....179......1073........6479.........39015..........235033
...8....121....1073.....10150.......97462........932318.........8918662
..16....472....6479.....97462.....1502511......23031390.......353088569
..32...1841...39015....932318....23031390.....564821426.....13849577141
..64...7181..235033...8918662...353088569...13849577141....543022804167
.128..28010.1416220..85379274..5420414253..340272636359..21348528789475
.256.109255.8533123.817325435.83214520668.8360888694306.839394891016021
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) +3*a(n-2) +2*a(n-3)
k=3: [order 10] for n>11
k=4: [order 37] for n>38
EXAMPLE
Some solutions for n=5 k=4
..0..1..1..0. .0..0..1..0. .0..0..1..0. .0..1..1..0. .0..1..1..0
..1..1..1..0. .1..1..0..0. .1..1..0..1. .0..1..0..1. .1..1..1..0
..1..1..0..0. .1..1..0..1. .0..1..0..1. .1..1..0..1. .0..0..0..0
..0..0..0..1. .1..0..0..1. .0..0..0..1. .0..0..1..0. .1..1..0..1
..1..1..1..1. .1..0..0..1. .1..0..0..1. .1..0..0..0. .1..1..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 31 2018
STATUS
approved