OFFSET
1,1
COMMENTS
Column 6 of A281469.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +3*a(n-3) -4*a(n-4) -4*a(n-5) +a(n-6) -a(n-7) +2*a(n-8) +5*a(n-9) -3*a(n-11) for n>17
EXAMPLE
Some solutions for n=4
..0..1..1..0..1..0. .0..0..1..0..1..1. .0..0..1..0..1..1. .0..1..0..1..1..0
..0..1..0..0..1..0. .1..0..1..0..1..0. .1..0..1..0..1..0. .0..1..0..1..0..0
..0..1..0..1..1..0. .1..0..1..0..1..1. .1..0..1..0..1..1. .1..1..0..1..0..1
..1..1..0..1..0..0. .0..0..1..0..0..1. .0..1..0..1..0..0. .1..0..0..1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 22 2017
STATUS
approved