OFFSET
1,2
COMMENTS
Column 3 of A298508.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 5*a(n-1) -4*a(n-2) +5*a(n-3) -25*a(n-4) +24*a(n-5) -23*a(n-6) +21*a(n-7) +44*a(n-8) -69*a(n-9) -5*a(n-10) +48*a(n-11) -26*a(n-12) +22*a(n-13) -10*a(n-14) -8*a(n-15) +4*a(n-16) for n>18
EXAMPLE
Some solutions for n=7
..0..1..0. .0..1..1. .0..0..0. .0..1..0. .0..1..0. .0..1..1. .0..1..0
..0..0..0. .1..1..0. .0..1..0. .0..0..0. .0..0..0. .0..0..1. .0..0..0
..0..0..0. .0..0..0. .1..0..1. .0..0..0. .0..0..0. .0..1..1. .0..0..0
..0..1..0. .1..0..1. .1..1..1. .0..1..0. .0..1..0. .0..1..0. .0..1..0
..0..0..0. .1..1..1. .1..1..1. .0..1..1. .0..1..1. .0..0..0. .1..1..1
..1..1..1. .1..1..1. .1..0..1. .1..0..0. .0..0..1. .0..0..0. .0..0..0
..0..1..0. .1..0..1. .0..0..0. .1..1..0. .0..1..1. .0..1..0. .1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 20 2018
STATUS
approved