OFFSET
1,2
COMMENTS
Column 4 of A278208.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 10*a(n-1) +46*a(n-2) +157*a(n-3) +471*a(n-4) -202*a(n-5) -2198*a(n-6) -1400*a(n-7) -941*a(n-8) -1959*a(n-9) +2763*a(n-10) +374*a(n-11) -387*a(n-12) +3427*a(n-13) -1743*a(n-14) -335*a(n-15) +862*a(n-16) -1124*a(n-17) +584*a(n-18) -96*a(n-19)
EXAMPLE
Some solutions for n=4
..0..0..1..1. .0..0..0..0. .0..0..0..0. .0..1..1..1. .0..1..0..0
..0..1..0..0. .1..0..0..1. .1..0..1..1. .0..1..1..0. .0..0..1..1
..1..1..1..0. .1..0..1..0. .1..1..1..0. .0..1..0..1. .1..0..1..0
..0..0..0..0. .0..1..1..1. .1..0..0..0. .0..1..0..1. .1..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 15 2016
STATUS
approved