OFFSET
1,2
COMMENTS
Column 3 of A279871.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 7*a(n-1) -13*a(n-2) -3*a(n-3) +13*a(n-4) +11*a(n-5) +29*a(n-6) -49*a(n-7) -8*a(n-8) -38*a(n-9) +28*a(n-10) +8*a(n-11) +16*a(n-12) for n>18
EXAMPLE
Some solutions for n=4
..0..1..1. .0..0..0. .0..0..0. .0..1..1. .0..0..1. .0..0..1. .0..0..1
..0..1..2. .1..2..2. .0..0..1. .1..1..1. .1..0..1. .0..0..0. .1..1..1
..1..1..2. .2..2..2. .0..0..0. .1..1..0. .0..0..0. .2..2..2. .1..1..0
..1..1..2. .2..0..2. .1..1..1. .1..1..1. .0..0..0. .2..2..2. .1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 21 2016
STATUS
approved