OFFSET
1,2
COMMENTS
Column 3 of A297923.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 5*a(n-1) +3*a(n-2) +6*a(n-3) -17*a(n-4) -12*a(n-5) -7*a(n-6) -36*a(n-7) +6*a(n-8) -19*a(n-9) for n>12
EXAMPLE
Some solutions for n=7
..0..0..1. .0..1..1. .0..1..1. .0..0..0. .0..1..1. .0..0..1. .0..0..1
..0..1..0. .1..0..0. .1..0..0. .1..1..1. .1..0..1. .0..0..1. .1..1..1
..0..0..1. .1..1..0. .1..1..0. .1..0..0. .0..1..0. .1..1..0. .1..0..0
..1..0..1. .0..0..1. .0..0..1. .1..1..0. .0..1..1. .0..1..1. .0..0..1
..1..1..0. .0..1..0. .0..1..1. .1..0..1. .1..0..1. .1..0..0. .0..1..1
..0..0..1. .1..1..0. .1..0..1. .0..0..1. .0..0..1. .0..1..0. .1..0..1
..0..1..0. .1..0..0. .0..0..1. .0..1..1. .0..0..1. .1..0..1. .0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 08 2018
STATUS
approved