OFFSET
1,1
COMMENTS
Column 3 of A188747
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n) = 2*a(n-1) +9*a(n-2) +50*a(n-3) +55*a(n-4) +37*a(n-5) -108*a(n-6) -111*a(n-7) +89*a(n-8) +27*a(n-9) -28*a(n-10) -5*a(n-11) -48*a(n-12) -28*a(n-13) -17*a(n-14) -4*a(n-15) -a(n-16)
EXAMPLE
Some solutions for 4X3
..0..0..0....0..0..1....1..0..0....0..0..0....0..1..0....0..0..0....0..1..1
..0..1..1....1..0..1....0..0..0....0..0..0....0..0..1....0..1..0....0..0..1
..1..0..0....0..0..0....0..0..1....0..0..1....1..1..0....1..0..0....1..1..0
..0..0..0....1..1..1....1..0..1....0..1..1....0..1..1....0..0..1....0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 09 2011
STATUS
approved