OFFSET
1,1
COMMENTS
Column 3 of A305642.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +3*a(n-2) +9*a(n-3) -11*a(n-4) -37*a(n-5) -56*a(n-6) +14*a(n-7) +135*a(n-8) +177*a(n-9) +40*a(n-10) -179*a(n-11) -188*a(n-12) -61*a(n-13) +34*a(n-14) +3*a(n-15) for n>17.
EXAMPLE
Some solutions for n=5
..0..0..1. .0..1..1. .0..0..0. .0..1..0. .0..0..0. .0..1..1. .0..0..0
..1..1..1. .0..1..1. .1..0..0. .0..0..0. .0..0..1. .0..0..0. .0..0..0
..1..1..1. .1..1..1. .1..0..0. .0..0..0. .1..0..0. .0..0..0. .0..0..0
..0..1..0. .1..1..1. .1..1..0. .0..0..0. .1..0..1. .1..0..0. .0..0..0
..0..1..0. .1..1..1. .1..1..0. .0..1..0. .1..1..0. .1..0..0. .0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 07 2018
STATUS
approved