OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) -3*a(n-2) +14*a(n-3) -20*a(n-4) +9*a(n-5) -47*a(n-6) +24*a(n-7) +14*a(n-8) +62*a(n-9) +24*a(n-10) -33*a(n-11) -52*a(n-12) -43*a(n-13) +4*a(n-14) +25*a(n-15) +20*a(n-16) +5*a(n-17) -2*a(n-18) -3*a(n-19).
EXAMPLE
Some solutions for n=3
..1..1..1....0..1..1....0..1..1....1..1..1....1..0..1....1..0..1....0..1..1
..1..1..1....1..1..0....1..1..1....1..1..1....1..0..0....0..1..1....1..1..1
..1..1..1....1..0..1....1..1..1....0..1..1....0..0..0....0..1..1....1..1..1
..1..1..0....1..1..1....1..1..1....1..0..0....1..0..0....0..1..1....0..0..0
..1..0..0....1..1..1....1..0..0....1..1..0....1..0..0....0..1..1....0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 25 2011
STATUS
approved