OFFSET
1,1
COMMENTS
Table starts
...2.....4.......7.......13.........24...........44.............81
...4....11......31.......90........254..........728...........2078
...7....31.....135......616.......2782........12544..........56646
..13....90.....616.....4543......32439.......233636........1680927
..24...254....2782....32439.....368720......4215593.......48217515
..44...728...12544...233636....4215593.....76657600.....1394258872
..81..2078...56646..1680927...48217515...1394258872....40337678992
.149..5931..255699.12090311..551193737..25339030733..1165868818808
.274.16941.1154239.86993766.6302520826.460672241848.33712843195488
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..311
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1) +a(n-2) +a(n-3)
k=2: a(n) = a(n-1) +4*a(n-2) +3*a(n-3) +a(n-4) +4*a(n-5) -a(n-6) -6*a(n-7) -a(n-8) +a(n-9)
k=3: [order 14]
k=4: [order 50]
EXAMPLE
Some solutions for n=5 k=4
..0..0..1..0. .0..0..0..1. .1..0..0..0. .0..1..0..0. .0..0..1..0
..1..0..0..0. .0..0..1..0. .1..0..0..0. .1..0..0..0. .1..1..0..0
..0..1..0..1. .1..0..0..1. .0..1..0..0. .0..0..0..0. .0..1..0..0
..0..0..0..0. .0..1..0..0. .0..1..0..1. .1..0..0..1. .0..0..1..0
..0..0..1..1. .0..0..1..0. .0..0..0..1. .1..0..0..0. .1..0..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 15 2017
STATUS
approved