OFFSET
1,1
COMMENTS
Column 2 of A234036
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 18*a(n-1) -79*a(n-2) -56*a(n-3) +459*a(n-4) +56*a(n-5) -597*a(n-6) -88*a(n-7) +90*a(n-8) -10*a(n-9)
EXAMPLE
Some solutions for n=3
..2..3..3....1..0..1....3..3..4....2..1..2....3..4..4....3..3..3....3..2..3
..3..3..4....1..1..0....4..3..4....2..2..1....4..3..4....4..3..3....2..3..3
..4..4..4....1..0..1....3..4..4....1..2..2....3..3..4....3..3..2....3..2..3
..3..4..4....0..1..1....4..4..4....2..2..2....4..3..4....4..3..2....2..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 18 2013
STATUS
approved