OFFSET
1,1
COMMENTS
Column 2 of A210086
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 42*a(n-1) -322*a(n-2) +274*a(n-3) +1887*a(n-4) -3124*a(n-5) +76*a(n-6) +1168*a(n-7)
EXAMPLE
Some solutions for n=4
..0..0..1....0..0..1....0..1..0....0..1..1....0..0..1....0..1..2....0..0..1
..1..2..0....2..3..0....0..2..0....0..2..3....0..0..2....1..2..3....1..2..2
..2..3..1....1..2..0....0..1..0....1..1..0....1..2..3....2..0..3....0..3..0
..0..3..2....0..1..3....0..2..1....3..2..3....2..0..1....3..0..1....0..2..1
..2..0..2....0..2..0....3..3..0....3..0..0....0..3..3....3..2..1....1..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 17 2012
STATUS
approved