OFFSET
1,1
COMMENTS
Column 1 of A250620
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 9*a(n-1) -15*a(n-2) -70*a(n-3) +208*a(n-4) +148*a(n-5) -795*a(n-6) +15*a(n-7) +1267*a(n-8) -318*a(n-9) -840*a(n-10) +280*a(n-11) +176*a(n-12) -64*a(n-13)
EXAMPLE
Some solutions for n=5
..0..2....1..0....0..0....1..2....1..0....1..2....2..1....1..0....2..0....0..2
..0..2....2..2....1..0....1..1....2..1....0..2....2..1....1..2....2..0....0..0
..0..2....2..2....2..0....0..2....1..0....2..2....2..2....0..2....2..2....0..2
..1..2....1..2....0..0....1..2....2..2....2..2....0..2....2..0....0..2....0..0
..0..2....2..2....2..0....1..2....2..0....1..1....2..0....2..2....2..2....1..2
..2..1....0..0....2..1....0..2....0..2....2..2....1..2....0..2....0..2....1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 26 2014
STATUS
approved