OFFSET
1,1
COMMENTS
Column 3 of A229380
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) +50*a(n-2) -133*a(n-3) -653*a(n-4) +1214*a(n-5) +2281*a(n-6) -3420*a(n-7) -2248*a(n-8) +2704*a(n-9) +835*a(n-10) -481*a(n-11) -120*a(n-12)
EXAMPLE
Some solutions for n=4
..2..0..1....0..0..1....2..2..2....2..1..2....0..1..0....1..2..2....0..1..2
..1..0..2....1..2..1....0..0..1....1..2..0....1..2..1....0..0..1....1..2..0
..1..2..1....0..1..0....1..2..1....0..1..0....1..0..0....1..2..2....2..1..0
..0..1..0....0..2..0....1..0..2....2..2..1....2..1..2....0..0..0....0..1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 21 2013
STATUS
approved