OFFSET
1,1
COMMENTS
Column 3 of A227442.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 11*a(n-1) -36*a(n-2) +79*a(n-3) -87*a(n-4) -7*a(n-5) +159*a(n-6) -206*a(n-7) +127*a(n-8) -31*a(n-9).
EXAMPLE
Some solutions for n=4
..1..0..0....1..1..1....1..1..1....0..0..0....1..0..0....0..0..0....0..1..0
..0..0..1....0..0..0....0..0..0....0..1..1....0..1..1....0..0..1....0..0..0
..0..1..0....0..1..1....0..0..1....0..1..1....1..0..0....0..0..0....1..1..1
..0..1..1....0..0..0....0..0..0....1..1..1....1..0..1....1..1..0....1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 11 2013
STATUS
approved