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.....1502630......23034971.......353167830
..32...1841...39015....932318....23034971.....564998177.....13855907809
..64...7181..235033...8918662...353167830...13855907809....543386033722
.128..28010.1416220..85379274..5421997554..340475803209..21367169090398
.256.109255.8533123.817325435.83244577728.8367066746663.840301228632106
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..0..0..1. .0..0..1..0. .0..1..0..0. .0..0..0..1. .0..1..1..1
..0..1..1..0. .1..1..1..0. .0..0..1..0. .1..0..0..0. .1..0..0..0
..1..0..1..0. .0..0..0..1. .1..0..1..0. .0..0..1..0. .1..0..1..0
..1..0..0..1. .1..1..0..1. .0..0..1..0. .0..0..0..1. .0..0..1..1
..1..1..0..1. .1..1..1..0. .0..1..0..1. .1..1..1..1. .0..0..1..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 18 2018
STATUS
approved