OFFSET
1,2
COMMENTS
Column 1 of A185504
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n)=6*a(n-1)-2*a(n-2)-48*a(n-3)+132*a(n-4)-201*a(n-5)+234*a(n-6)+6*a(n-7)-2052*a(n-8)+5616*a(n-9)-10656*a(n-10)+8640*a(n-11)-5184*a(n-12)
EXAMPLE
Some solutions for 3X2
..0..2....1..1....1..0....0..0....1..0....2..0....1..2....0..1....0..0....0..1
..0..0....1..0....2..1....1..1....2..2....2..1....0..1....0..1....0..0....1..1
..2..0....2..0....2..1....0..0....1..2....0..0....0..1....1..2....1..1....1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 29 2011
STATUS
approved