OFFSET
1,1
COMMENTS
Column 2 of A268019.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 25*a(n-1) -225*a(n-2) +745*a(n-3) +475*a(n-4) -6275*a(n-5) -885*a(n-6) +22525*a(n-7) +22525*a(n-8) -885*a(n-9) -6275*a(n-10) +475*a(n-11) +745*a(n-12) -225*a(n-13) +25*a(n-14) -a(n-15).
EXAMPLE
Some solutions for n=5
..1..1....0..2....2..1....1..1....1..1....1..0....0..2....1..0....1..0....2..1
..2..2....0..2....2..2....0..1....2..2....0..0....2..2....0..0....2..0....0..0
..0..1....1..0....2..0....1..1....1..1....2..2....0..1....1..0....0..1....0..2
..1..0....2..1....1..0....1..1....0..1....0..2....1..2....1..2....2..2....0..1
..0..2....2..0....2..0....2..0....1..0....1..2....0..0....0..0....2..0....0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 24 2016
STATUS
approved