OFFSET
1,1
COMMENTS
Column 2 of A205215
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 15*a(n-1) -49*a(n-2) -97*a(n-3) +664*a(n-4) -980*a(n-5) +448*a(n-6) for n>13
EXAMPLE
Some solutions for n=4
..0..0..1....0..0..2....0..1..1....2..1..0....2..0..0....0..0..0....1..2..2
..1..0..0....1..0..2....2..1..1....2..1..0....1..0..0....2..2..0....1..1..1
..1..0..2....0..0..0....0..0..0....2..1..0....2..0..0....0..0..0....0..0..0
..2..0..1....1..2..0....0..2..1....0..0..0....1..0..2....0..2..1....0..1..1
..2..0..1....0..0..0....0..0..2....2..0..2....2..0..2....0..2..1....0..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 23 2012
STATUS
approved