OFFSET
1,1
COMMENTS
Column 4 of A218084
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..85
FORMULA
Empirical: a(n) = 3*a(n-1) +9*a(n-2) -4*a(n-3) -37*a(n-4) -13*a(n-5) +48*a(n-6) +39*a(n-7) -25*a(n-8) -18*a(n-9) -6*a(n-10) -3*a(n-11) -5*a(n-12) +4*a(n-13)
EXAMPLE
Some solutions for n=3
..1..0..0..0....0..0..1..1....0..0..1..1....1..1..0..0....0..0..1..1
..1..0..0..0....0..0..1..0....0..0..0..0....0..0..0..0....0..0..0..1
..1..1..0..0....0..1..0..0....0..0..0..0....0..0..0..0....0..0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 20 2012
STATUS
approved