OFFSET
1,2
COMMENTS
Column 3 of A300380.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-2) +9*a(n-3) +9*a(n-4) +3*a(n-5) -8*a(n-6) -a(n-7) -18*a(n-8) -24*a(n-9) -45*a(n-10) -10*a(n-11) -15*a(n-12) +39*a(n-13) -21*a(n-14) +9*a(n-15) -7*a(n-16) -13*a(n-17) +14*a(n-18) -5*a(n-19) +3*a(n-20) -2*a(n-22) +a(n-23) for n>25
EXAMPLE
Some solutions for n=5
..0..0..1. .0..1..1. .0..0..0. .0..0..0. .0..0..1. .0..0..1. .0..0..1
..0..1..1. .1..0..1. .0..1..0. .0..1..0. .0..1..1. .0..1..1. .0..1..1
..0..0..0. .1..1..1. .0..0..0. .1..1..0. .0..0..0. .0..0..0. .1..0..1
..0..1..0. .0..0..1. .1..1..0. .0..0..1. .0..1..0. .1..1..0. .1..1..0
..0..0..0. .0..1..1. .1..0..0. .0..1..1. .0..0..1. .1..0..0. .1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 04 2018
STATUS
approved