OFFSET
1,1
COMMENTS
Column 3 of A231227
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) +8*a(n-2) -18*a(n-3) -31*a(n-4) +39*a(n-5) +49*a(n-6) -73*a(n-7) +64*a(n-8) +15*a(n-9) -157*a(n-10) +98*a(n-11) +28*a(n-12) -24*a(n-13)
EXAMPLE
Some solutions for n=4
..0..0..0..0..0....0..0..1..1..1....0..0..0..1..1....0..0..1..1..1
..0..0..0..0..0....0..0..1..1..1....0..0..0..1..1....0..0..1..1..1
..1..1..1..1..1....1..1..0..0..0....0..0..0..1..1....0..0..0..1..1
..1..1..1..1..1....1..1..0..0..0....1..1..1..0..0....0..0..0..2..2
..0..0..0..0..0....1..1..0..0..0....1..1..1..0..0....0..0..2..2..2
..0..0..0..0..0....1..1..0..0..0....1..1..1..0..0....0..0..2..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 05 2013
STATUS
approved