OFFSET
1,1
COMMENTS
Column 3 of A305252.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +a(n-2) +a(n-4) -4*a(n-5) -a(n-6) -10*a(n-7) -10*a(n-8) -3*a(n-9) +6*a(n-11) +2*a(n-12).
EXAMPLE
Some solutions for n=5:
..0..0..0. .0..1..1. .0..1..1. .0..0..1. .0..0..0. .0..1..1. .0..1..1
..0..0..0. .1..1..1. .1..1..1. .0..0..0. .0..0..1. .1..1..1. .0..0..1
..0..0..0. .1..1..1. .1..1..1. .0..0..0. .0..1..1. .1..1..1. .0..0..0
..0..1..0. .0..1..1. .1..1..1. .0..0..0. .1..1..1. .1..1..0. .0..0..0
..0..0..0. .0..0..1. .0..1..1. .0..0..0. .1..1..1. .1..0..0. .0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 28 2018
STATUS
approved