OFFSET
1,1
COMMENTS
Column 3 of A306053.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) +9*a(n-3) -20*a(n-4) -27*a(n-5) +11*a(n-6) +33*a(n-7) +18*a(n-8) -22*a(n-9) -10*a(n-10) for n>12
EXAMPLE
Some solutions for n=5
..0..0..0. .0..0..0. .0..1..1. .0..1..0. .0..1..0. .0..1..1. .0..1..1
..0..1..1. .0..0..0. .1..0..1. .1..0..1. .1..0..1. .1..1..1. .0..0..1
..0..1..0. .0..0..0. .1..0..1. .1..1..1. .1..1..1. .1..1..1. .1..1..1
..0..0..0. .0..1..0. .0..1..1. .1..0..1. .1..0..1. .1..0..0. .1..0..1
..1..0..0. .1..1..0. .0..1..1. .0..1..0. .1..0..0. .1..0..1. .1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 18 2018
STATUS
approved