OFFSET
1,12
COMMENTS
Table starts
.0...0..0.....0.....0......0.......0.........0..........0...........0
.0...1..1.....2.....4......9......22........53........130.........320
.0...1..1.....6.....4......5......10........36.........34..........43
.0...2..6....26....88....301....1089......4340......16696.......64514
.0...4..4....88...220....759....3303.....11807......45995......161983
.0...9..5...301...759...4692...27620....167100.....990871.....5767582
.0..22.10..1089..3303..27620..163297...1242087....7872632....53760082
.0..53.36..4340.11807.167100.1242087..13125877..113996501..1068543427
.0.130.34.16696.45995.990871.7872632.113996501.1146051177.13578301848
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..220
FORMULA
Empirical for column k:
k=1: a(n) = a(n-1)
k=2: a(n) = 2*a(n-1) +a(n-2) +a(n-3) -a(n-4) -a(n-5) -a(n-6)
k=3: [order 18]
k=4: [order 83] for n>86
EXAMPLE
Some solutions for n=5 k=4
..0..1..1..1. .0..1..1..1. .0..1..1..0. .0..1..1..0. .0..1..0..1
..1..0..0..0. .1..0..0..0. .1..0..1..0. .1..0..1..1. .1..0..0..1
..1..1..0..1. .0..0..1..0. .0..1..1..1. .1..0..1..0. .0..0..1..0
..0..0..0..1. .1..1..0..1. .1..0..1..0. .0..0..1..0. .1..0..0..1
..1..0..1..0. .0..1..1..0. .0..1..0..1. .1..0..0..1. .1..0..1..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Aug 09 2018
STATUS
approved