OFFSET
1,2
COMMENTS
Column 2 of A279805.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 16*a(n-1) -64*a(n-2) -8*a(n-3) +72*a(n-4) -88*a(n-5) +144*a(n-6) +288*a(n-7) -112*a(n-8) -32*a(n-9) -16*a(n-10) -384*a(n-11) -256*a(n-12)
EXAMPLE
Some solutions for n=4
..0..0. .0..0. .0..1. .0..1. .0..0. .0..1. .0..0. .0..1. .0..1. .0..1
..1..1. .1..1. .1..1. .1..1. .1..0. .0..0. .1..0. .1..1. .2..1. .2..0
..2..2. .1..0. .2..0. .0..2. .2..2. .0..2. .2..0. .2..2. .2..0. .1..1
..2..1. .1..0. .0..2. .1..0. .0..0. .2..1. .1..1. .1..2. .2..2. .1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 19 2016
STATUS
approved