OFFSET
1,1
COMMENTS
Column 4 of A297457.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 6*a(n-1) -2*a(n-2) +14*a(n-3) -69*a(n-4) +45*a(n-5) -13*a(n-6) +23*a(n-7) +3*a(n-8) +3*a(n-9) +2*a(n-10) -4*a(n-11)
EXAMPLE
Some solutions for n=6
..1..0..0..1. .0..0..0..1. .1..1..0..0. .1..1..0..1. .1..0..0..0
..1..0..0..0. .1..0..0..0. .1..1..0..0. .1..1..0..0. .1..0..0..1
..0..0..0..1. .0..0..0..1. .0..0..0..1. .0..0..0..1. .1..0..0..1
..0..0..0..1. .1..0..0..0. .0..0..0..1. .0..0..0..1. .0..0..0..0
..0..1..0..0. .0..0..0..1. .1..0..0..0. .0..0..0..1. .1..1..0..0
..0..0..0..0. .1..0..0..1. .1..0..0..0. .1..0..0..0. .0..1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 30 2017
STATUS
approved