OFFSET
1,2
COMMENTS
Table starts
..1....2....3......5........8.........13...........21..............34
..2....5....9.....21.......57........125..........289.............741
..3....9...13.....31.......81........184..........492............1457
..5...21...31....137......594.......2574........15118...........95244
..8...57...81....594.....6339......40938.......428394.........5627600
.13..125..184...2574....40938.....533726.....11571636.......256609365
.21..289..492..15118...428394...11571636....493774680.....20147703090
.34..741.1457..95244..5627600..256609365..20147703090...1580858618327
.55.1737.4371.569635.59111561.5035506864.740128547549.105913781465166
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) -a(n-2) +8*a(n-3) -8*a(n-4)
k=3: [order 17] for n>19
k=4: [order 51] for n>55
EXAMPLE
Some solutions for n=5 k=4
..0..1..0..1. .0..0..0..1. .0..1..0..0. .0..0..1..1. .0..1..1..0
..0..0..1..1. .1..0..0..0. .1..1..0..1. .0..0..0..1. .1..1..1..1
..1..1..0..0. .0..0..0..0. .1..1..1..1. .1..0..1..1. .0..0..0..0
..0..0..1..1. .0..0..0..0. .1..1..1..1. .1..0..0..0. .0..1..1..0
..0..1..0..1. .0..1..0..0. .1..1..1..1. .0..0..0..1. .1..1..1..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jul 16 2018
STATUS
approved