OFFSET
1,1
COMMENTS
Column 2 of A186052
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n)=14*a(n-1)-45*a(n-2)+184*a(n-3)-1468*a(n-4)+3604*a(n-5)-10460*a(n-6)+45192*a(n-7)-66568*a(n-8)+121728*a(n-9)-342032*a(n-10)+234240*a(n-11)-343296*a(n-12)+580608*a(n-13)
EXAMPLE
Some solutions for 6X4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..1..0..1....0..1..0..1....0..0..0..0....0..1..0..0....0..1..0..1
..0..1..0..1....1..0..0..1....0..0..0..1....0..0..0..0....0..1..0..1
..0..1..0..0....0..0..0..1....0..0..0..1....0..1..1..0....0..0..1..1
..1..1..0..1....1..1..1..0....0..0..1..0....0..1..0..1....0..0..0..0
..0..0..0..1....1..0..0..0....1..0..1..1....0..1..0..1....0..1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 11 2011
STATUS
approved