OFFSET
1,1
COMMENTS
Column 1 of A224625
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) -a(n-2) +a(n-3) -2*a(n-4) +2*a(n-5) -a(n-7) -a(n-9) +a(n-10) -a(n-11) +a(n-12) for n>18
EXAMPLE
Some solutions for n=2
..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....1..2..0..1..0
..0..0..0..0..0....1..1..2..0..0....1..1..2..0..0....0..0..0..0..0
..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..1..1..2..0
..0..0..0..0..2....0..0..0..0..0....0..0..0..0..0....0..0..0..0..0
..0..0..0..0..1....0..0..0..0..0....0..0..0..0..0....0..0..0..0..0
..0..0..0..0..1....0..1..1..1..1....0..2..2..2..1....2..0..0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 12 2013
STATUS
approved