OFFSET
1,1
COMMENTS
Row 3 of A207391
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) -2*a(n-2) +9*a(n-3) -15*a(n-4) -21*a(n-6) +16*a(n-7) +11*a(n-8) +27*a(n-9) +2*a(n-10) -12*a(n-12) -a(n-13) -2*a(n-14) +2*a(n-15)
EXAMPLE
Some solutions for n=4
..1..0..0..0....1..1..1..1....1..1..1..1....0..0..0..0....0..0..0..0
..1..0..1..1....0..0..0..0....1..1..1..1....0..1..1..1....0..1..1..0
..1..0..1..1....0..1..1..1....1..1..1..1....0..1..1..0....0..1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 17 2012
STATUS
approved