OFFSET
1,5
COMMENTS
Table starts
..0...1....1......2.......3........5..........8..........13............21
..1...3....7.....13......23.......49.........99.........189...........383
..1...7...15.....29......63......167........477........1233..........3265
..2..13...29....112.....439.....1950.......7702.......30277........126429
..3..23...63....439....2336....13836......84449......477162.......2791607
..5..49..167...1950...13836...122197....1190886....10305454......92938855
..8..99..477...7702...84449..1190886...17345466...225351737....3159884395
.13.189.1233..30277..477162.10305454..225351737..4446967161...94825218644
.21.383.3265.126429.2791607.92938855.3159884395.94825218644.3109567007082
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) +4*a(n-3) -4*a(n-4) for n>5
k=3: [order 15] for n>17
k=4: [order 68] for n>70
EXAMPLE
Some solutions for n=5, k=4
..0..1..1..0. .0..1..1..0. .0..1..1..0. .0..1..1..0. .0..0..0..1
..0..0..0..1. .0..0..0..1. .1..0..0..0. .1..0..0..0. .1..1..1..1
..0..0..0..1. .0..0..0..1. .1..0..0..0. .1..0..0..0. .0..1..1..1
..0..0..0..1. .0..0..0..0. .1..0..0..0. .0..0..0..0. .0..1..1..1
..0..1..1..0. .0..1..1..1. .0..1..1..0. .1..1..1..0. .1..0..0..1
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 11 2018
STATUS
approved