OFFSET
1,1
COMMENTS
Column 3 of A249707
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) -a(n-2) +12*a(n-4) -10*a(n-5) -41*a(n-8) -6*a(n-9) -2*a(n-10) +2*a(n-11) +44*a(n-12) +36*a(n-13) +16*a(n-14) -24*a(n-16) -24*a(n-17)
EXAMPLE
Some solutions for n=6
..1....1....3....1....0....1....1....1....2....2....1....1....2....0....2....0
..2....2....2....2....1....1....0....1....2....1....0....1....2....3....2....2
..2....2....0....2....2....1....2....2....3....2....1....1....2....1....3....3
..3....2....2....2....1....0....1....1....1....2....1....1....2....1....2....2
..2....1....2....3....1....2....1....1....2....2....1....3....2....0....2....0
..2....3....3....0....0....1....1....1....2....2....1....0....2....1....2....2
..2....2....1....2....1....1....1....1....2....0....1....1....1....1....3....2
..3....2....2....2....2....1....0....0....3....3....0....1....3....1....2....3
..0....1....2....2....1....3....3....3....1....2....3....3....2....0....2....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2014
STATUS
approved