OFFSET
1,4
COMMENTS
Column 2 of A282159.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 21*a(n-1) -159*a(n-2) +559*a(n-3) -1332*a(n-4) +3408*a(n-5) -4888*a(n-6) +8256*a(n-7) -9024*a(n-8) +8512*a(n-9) -6912*a(n-10) +3072*a(n-11) -512*a(n-12)
EXAMPLE
Some solutions for n=4
..0..1. .0..1. .0..1. .0..0. .0..1. .0..1. .0..0. .0..1. .0..1. .0..0
..0..2. .1..1. .2..0. .0..1. .0..2. .0..0. .0..1. .2..1. .1..2. .1..2
..0..1. .0..2. .1..0. .2..0. .0..1. .1..2. .0..2. .0..1. .0..1. .0..2
..2..0. .1..1. .2..0. .0..1. .2..2. .0..0. .1..0. .2..2. .2..1. .2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 07 2017
STATUS
approved