OFFSET
1,1
COMMENTS
Column 4 of A205170
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 833*a(n-1) -33758*a(n-2) +523880*a(n-3) -3857129*a(n-4) +13605853*a(n-5) -17604432*a(n-6) -15652010*a(n-7) +55894364*a(n-8) -22106688*a(n-9) -29904720*a(n-10) +18240672*a(n-11) +492672*a(n-12) -1016064*a(n-13)
EXAMPLE
Some solutions for n=4
..0..0..0..0..1....0..0..0..0..0....0..0..1..0..0....0..0..1..1..0
..2..1..3..0..0....0..1..2..1..0....2..0..3..0..2....0..1..1..0..2
..1..3..2..2..0....1..3..1..3..3....0..3..1..1..2....1..1..0..0..3
..2..2..1..1..0....1..1..0..0..1....0..2..0..1..0....1..3..0..1..0
..1..1..3..2..1....0..0..2..0..0....3..2..2..1..2....1..3..2..3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2012
STATUS
approved