OFFSET
1,2
COMMENTS
Column 3 of A298382.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) +3*a(n-2) -6*a(n-3) -16*a(n-4) +6*a(n-5) +23*a(n-6) +16*a(n-7) -13*a(n-8) -40*a(n-9) -50*a(n-10) +14*a(n-11) +106*a(n-12) +53*a(n-13) -18*a(n-14) -38*a(n-15) -34*a(n-16) -8*a(n-17) for n>18.
EXAMPLE
Some solutions for n=7
..0..0..0. .0..0..1. .0..1..1. .0..1..0. .0..0..0. .0..1..0. .0..0..0
..1..0..1. .0..1..1. .1..1..0. .0..0..0. .0..0..0. .0..0..0. .1..0..1
..1..1..1. .0..1..0. .0..1..1. .0..1..0. .1..1..1. .0..1..0. .1..1..1
..1..0..1. .0..0..0. .1..1..0. .1..1..0. .0..1..0. .1..1..0. .1..0..1
..0..1..0. .0..1..0. .0..0..0. .0..1..0. .1..1..1. .0..1..0. .1..0..0
..0..0..0. .0..1..1. .0..1..0. .0..0..0. .1..0..1. .0..0..0. .1..1..1
..0..1..0. .0..0..1. .1..1..1. .1..0..1. .0..0..0. .0..1..0. .1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 18 2018
STATUS
approved