OFFSET
1,5
COMMENTS
Table starts
..0....1.....1......2........3.........5..........8...........13............21
..1....7....16.....45......120.......333........928.........2613..........7400
..1...16....43....122......404......1344.......4583........15737.........53378
..2...45...122....524.....2342......9773......44095.......195387........864584
..3..120...404...2342....14568.....85222.....532401......3294736......20347911
..5..333..1344...9773....85222....684269....5879970.....50360206.....428319949
..8..928..4583..44095...532401...5879970...69857903....835457349....9913271027
.13.2613.15737.195387..3294736..50360206..835457349..14106315869..235116618481
.21.7400.53378.864584.20347911.428319949.9913271027.235116618481.5489873419154
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..180
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1) +a(n-2)
k=2: a(n) = 2*a(n-1) +5*a(n-2) -2*a(n-3) -12*a(n-4) -8*a(n-5) for n>6
k=3: [order 19] for n>21
k=4: [order 69] for n>71
EXAMPLE
Some solutions for n=5 k=4
..0..0..0..1. .0..1..1..1. .0..1..0..1. .0..0..0..0. .0..0..0..0
..1..0..1..1. .0..1..1..0. .1..1..1..1. .1..0..0..1. .1..1..1..0
..0..0..0..1. .1..0..1..1. .0..1..1..0. .0..0..0..0. .1..1..1..0
..1..0..0..0. .1..1..1..1. .0..0..1..1. .0..0..0..1. .1..0..0..0
..0..0..0..1. .0..1..1..0. .0..1..1..0. .1..0..1..1. .0..0..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jul 09 2018
STATUS
approved