OFFSET
1,2
COMMENTS
Column 1 of A186553
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n)=32*a(n-1)-77*a(n-2)-4496*a(n-3)+117783*a(n-4)-1083636*a(n-5)+7006716*a(n-6)-23429520*a(n-7)+57318192*a(n-8)-54976320*a(n-9)+41990400*a(n-10)
EXAMPLE
Some solutions for 4X3
..2..0..2....0..0..0....0..0..2....2..0..0....2..0..2....0..0..0....0..0..0
..2..0..3....2..1..3....2..2..2....3..0..3....0..0..3....1..2..2....0..2..1
..1..1..1....2..0..3....0..0..3....2..0..3....2..1..2....3..1..2....1..2..3
..1..0..0....3..2..2....3..0..3....2..3..2....1..3..3....1..2..2....1..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 23 2011
STATUS
approved