OFFSET
1,1
COMMENTS
Column 1 of A203896
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 28*a(n-1) -348*a(n-2) +2536*a(n-3) -12058*a(n-4) +39384*a(n-5) -90584*a(n-6) +147848*a(n-7) -170061*a(n-8) +134588*a(n-9) -69668*a(n-10) +21216*a(n-11) -2880*a(n-12)
EXAMPLE
Some solutions for n=4
..0..3....3..2....2..3....1..0....4..2....0..3....3..2....1..3....1..2....2..3
..2..2....2..3....2..3....0..1....2..4....2..3....1..4....1..3....0..3....2..3
..1..3....1..4....3..3....1..1....2..4....4..4....4..4....4..4....4..3....1..4
..2..4....1..4....4..3....0..4....3..4....4..4....4..4....4..4....4..3....1..4
..2..4....2..3....3..4....2..2....3..4....4..4....4..4....4..4....3..4....1..4
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 07 2012
STATUS
approved