OFFSET
1,2
COMMENTS
Column 3 of A303690.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +6*a(n-2) -3*a(n-3) -9*a(n-4) +7*a(n-5) +3*a(n-6) -20*a(n-7) -3*a(n-8) +12*a(n-9) -12*a(n-11) -3*a(n-12) +2*a(n-13) -5*a(n-14) +a(n-15) +2*a(n-16) for n>18
EXAMPLE
Some solutions for n=5
..0..1..0. .0..1..0. .0..1..1. .0..1..0. .0..1..0. .0..0..1. .0..1..0
..1..0..1. .1..1..1. .1..0..0. .1..0..1. .1..1..1. .1..1..0. .1..0..1
..1..0..0. .0..1..0. .0..0..1. .0..1..0. .0..1..0. .0..1..1. .0..0..1
..0..0..1. .0..0..1. .1..0..1. .1..1..1. .1..0..0. .0..1..0. .1..0..0
..1..0..1. .1..1..0. .0..1..0. .0..1..0. .1..0..1. .1..0..1. .1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 28 2018
STATUS
approved