OFFSET
1,2
COMMENTS
Column 3 of A296827.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) +3*a(n-2) +35*a(n-3) -38*a(n-4) -111*a(n-5) -176*a(n-6) +144*a(n-7) +267*a(n-8) +147*a(n-9) -110*a(n-10) -107*a(n-11) +56*a(n-12) +58*a(n-13) +49*a(n-14) -10*a(n-15) -18*a(n-16)
EXAMPLE
Some solutions for n=7
..0..0..0. .0..1..0. .0..0..1. .1..0..0. .1..1..0. .1..0..0. .0..1..0
..0..0..1. .0..1..1. .1..1..1. .1..1..0. .1..0..0. .1..1..0. .1..1..0
..0..1..1. .0..0..0. .0..1..0. .1..0..1. .0..1..1. .0..1..0. .1..0..1
..0..0..0. .0..1..0. .0..0..0. .0..1..1. .0..1..1. .0..1..1. .0..1..0
..1..1..0. .0..1..1. .0..0..1. .0..1..0. .0..0..0. .0..1..0. .0..1..1
..1..0..1. .1..1..0. .0..1..1. .1..0..0. .0..1..0. .1..0..1. .1..0..1
..1..1..1. .0..0..0. .0..0..0. .1..1..0. .1..1..0. .0..1..0. .0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 21 2017
STATUS
approved