OFFSET
1,1
COMMENTS
Column 3 of A299187.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) -a(n-2) +3*a(n-3) -14*a(n-4) +a(n-5) +4*a(n-6) +23*a(n-7) +3*a(n-8) -10*a(n-9) -21*a(n-10) -4*a(n-11) +3*a(n-13) +a(n-14) +6*a(n-15) +6*a(n-16) +4*a(n-17) for n>19
EXAMPLE
Some solutions for n=5
..0..1..0. .0..1..1. .0..1..0. .0..1..1. .0..0..0. .0..0..0. .0..1..0
..0..0..0. .0..1..0. .0..0..0. .0..0..0. .0..1..0. .0..1..0. .1..0..0
..1..1..1. .0..1..1. .0..0..0. .1..1..0. .0..0..0. .0..0..0. .0..0..0
..1..0..1. .0..1..1. .0..1..0. .0..0..0. .1..1..1. .1..1..1. .0..0..1
..1..1..1. .0..1..0. .0..0..0. .0..1..1. .1..0..1. .0..0..0. .0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 04 2018
STATUS
approved