OFFSET
1,1
COMMENTS
Column 3 of A200801
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n) = 60*a(n-1) -17*a(n-2) -964*a(n-3) -2509*a(n-4) +968*a(n-5) +23125*a(n-6) +31652*a(n-7) -4566*a(n-8) -17118*a(n-9) -29646*a(n-10) -74826*a(n-11) -64125*a(n-12) -13932*a(n-13) +4131*a(n-14) +1458*a(n-15) for n>16
EXAMPLE
Some solutions for n=4
..0..0..0....0..0..1....0..0..0....0..0..1....0..0..1....0..0..0....0..0..1
..1..2..2....0..2..2....1..2..2....2..0..1....1..2..0....1..2..0....1..2..0
..0..0..3....1..2..3....1..2..2....2..3..3....3..0..0....3..1..1....1..3..3
..2..3..2....0..0..0....2..0..1....3..3..2....3..0..1....0..3..2....3..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 22 2011
STATUS
approved