OFFSET
1,2
COMMENTS
Table starts
..1....2....3......5.......8........13.........21...........34.............55
..2....4....4.....16......50.......112........348.........1028...........2796
..3....4....5.....17......12.......100........219..........498...........1999
..5...16...17....195.....490......2606......15646........74688.........397909
..8...50...12....490....1749......7038......71212.......440402........2785299
.13..112..100...2606....7038....110320....1166270.....10448313......136604409
.21..348..219..15646...71212...1166270...25406586....353699661.....6688607300
.34.1028..498..74688..440402..10448313..353699661...7311722995...215277571718
.55.2796.1999.397909.2785299.136604409.6688607300.215277571718.11308912804354
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) +2*a(n-2) +6*a(n-3) -10*a(n-4) -8*a(n-5) for n>6
k=3: [order 18] for n>19
k=4: [order 66] for n>68
EXAMPLE
Some solutions for n=6 k=4
..0..1..1..1. .0..0..1..1. .0..1..0..1. .0..1..1..0. .0..1..0..0
..1..1..0..0. .0..0..1..1. .0..1..0..1. .0..1..1..0. .0..1..0..0
..0..1..0..0. .0..0..1..0. .1..1..0..0. .1..1..0..0. .1..1..1..0
..1..1..1..1. .0..0..1..1. .1..1..0..0. .1..1..0..0. .1..1..0..0
..1..1..0..0. .1..0..1..1. .0..0..0..1. .0..1..1..0. .0..1..0..0
..0..0..0..0. .1..0..1..1. .0..0..1..0. .0..1..1..0. .0..1..0..0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 15 2018
STATUS
approved