OFFSET
1,1
COMMENTS
Column 2 of A233733
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) +30*a(n-2) -71*a(n-3) -192*a(n-4) +415*a(n-5) +410*a(n-6) -847*a(n-7) -269*a(n-8) +544*a(n-9) +38*a(n-10) -42*a(n-11) -4*a(n-12)
EXAMPLE
Some solutions for n=5
..0..2..0....1..2..0....1..0..1....3..2..3....1..0..2....1..2..3....3..2..0
..1..0..1....2..0..1....3..2..0....2..0..1....3..1..3....3..1..0....1..3..1
..3..1..3....3..2..3....2..0..1....3..2..3....1..0..1....2..0..2....3..2..3
..2..0..1....1..0..1....0..1..3....0..1..0....2..3..2....3..1..0....2..0..1
..1..2..0....2..3..2....2..0..2....1..3..1....3..1..3....2..0..2....3..2..0
..2..0..1....3..1..3....3..2..3....0..1..2....1..0..1....3..1..0....1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 15 2013
STATUS
approved