OFFSET
1,8
COMMENTS
Table starts
.0..0..0...0...0...0....0....0....0.....0.....0.....0......0......0......0
.0..1..2...1...8...5...22...29...60...121...194...425....704...1421...2574
.0..2..0...2...1...6....8...15...22....44....82...152....267....486....898
.0..1..2...8..13..27...43..104..220...478...988..2085...4451...9505..20311
.0..8..1..13..34..57...73..174..350...800..1605..3376...7079..15234..32785
.0..5..6..27..57..87..161..361..898..1984..4089..8938..20136..45253.100907
.0.22..8..43..73.161..181..540.1076..2572..5179.11814..27638..63592.145715
.0.29.15.104.174.361..540.1380.2682..6043.12820.28413..61050.133945.294724
.0.60.22.220.350.898.1076.2682.4176.11358.21477.51492.105048.245900.540109
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..511
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1)
k=2: a(n) = 3*a(n-2) +2*a(n-3) -2*a(n-4)
k=3: a(n) = a(n-1) +2*a(n-2) +2*a(n-5) -4*a(n-6) -8*a(n-7) -a(n-8) +a(n-9)
k=4: [order 21] for n>27
k=5: [order 34] for n>40
k=6: [order 67] for n>74
EXAMPLE
Some solutions for n=7 k=4
..0..0..1..1. .0..0..1..1. .0..0..0..0. .0..0..0..0. .0..0..1..1
..0..1..0..1. .1..0..0..1. .0..1..1..0. .0..1..1..0. .0..1..0..1
..0..1..0..1. .1..1..1..0. .0..1..0..1. .0..1..0..1. .0..1..0..1
..0..1..0..1. .0..0..0..1. .0..1..0..1. .0..1..0..1. .1..0..1..0
..0..1..0..1. .0..1..1..0. .0..1..0..1. .0..1..0..1. .1..0..1..0
..0..1..0..1. .1..0..0..1. .1..0..1..0. .0..1..1..0. .0..1..1..0
..0..0..1..1. .1..1..1..1. .1..1..0..0. .0..0..0..0. .0..0..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 14 2018
STATUS
approved