OFFSET
1,2
COMMENTS
Table starts
...1.....2.......4.........7..........12...........21.............37
...2....11......31........88.........287..........881...........2686
...4....31.....126.......575........2832........13322..........62874
...7....88.....575......4251.......34086.......261354........2009116
..12...287....2832.....34086......458494......5692727.......71592909
..21...881...13322....261354.....5692727....114153198.....2324267560
..37..2686...62874...2009116....71592909...2324267560....76925689840
..65..8347..299056..15561333...910873718..47816866681..2573555751062
.114.25763.1418177.120192735.11510112796.977475485051.85477431609556
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..199
FORMULA
Empirical for column k:
k=1: a(n) = 2*a(n-1) -a(n-2) +a(n-3).
k=2: a(n) = 3*a(n-1) -a(n-2) +8*a(n-3) -12*a(n-4) +2*a(n-5) -12*a(n-6).
k=3: [order 16].
k=4: [order 35].
EXAMPLE
Some solutions for n=5, k=4
..0..1..0..0. .1..0..0..0. .0..1..0..1. .1..1..1..1. .1..1..0..0
..1..0..0..0. .1..0..0..0. .1..0..0..1. .0..0..0..0. .0..1..0..0
..0..0..0..0. .1..0..0..0. .0..0..0..0. .0..0..1..1. .1..1..0..0
..1..0..0..0. .0..1..0..0. .0..0..0..0. .1..0..0..0. .1..1..0..0
..0..1..1..0. .0..0..1..0. .0..1..1..1. .1..1..0..0. .0..1..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 19 2017
STATUS
approved