OFFSET
1,1
COMMENTS
Column 3 of A183854
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n)=8*a(n-1)+59*a(n-2)-565*a(n-3)-822*a(n-4)+13359*a(n-5)-4545*a(n-6)-132397*a(n-7)+154942*a(n-8)+558160*a(n-9)-920421*a(n-10)-1048403*a(n-11)+2303548*a(n-12)+729071*a(n-13)-2730029*a(n-14)+118317*a(n-15)+1498861*a(n-16)-308470*a(n-17)-342440*a(n-18)+95112*a(n-19)+25872*a(n-20)-8064*a(n-21)
EXAMPLE
Some solutions for 3X4
..3..1..1..3....2..0..2..2....1..3..1..3....2..2..0..2....1..2..1..3
..2..3..2..1....2..2..2..0....1..2..1..2....0..2..0..2....3..3..3..2
..3..1..3..3....0..0..2..0....3..3..3..3....2..2..2..2....1..2..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 07 2011
STATUS
approved