OFFSET
1,1
COMMENTS
Column 3 of A221632
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..177
FORMULA
Empirical: a(n) = 15*a(n-1) -69*a(n-2) +100*a(n-3) +61*a(n-4) -209*a(n-5) -378*a(n-6) +996*a(n-7) +544*a(n-8) -1560*a(n-9) -491*a(n-10) +1328*a(n-11) -180*a(n-12) -112*a(n-13) +124*a(n-14) +32*a(n-15) for n>17
EXAMPLE
Some solutions for n=3
..1..0..1....1..1..1....0..1..0....1..0..0....1..0..0....0..0..0....1..0..1
..1..1..1....1..0..0....1..0..0....1..0..0....0..0..1....1..0..1....0..1..1
..1..1..0....0..0..1....0..0..0....1..0..1....0..1..1....0..0..0....0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 21 2013
STATUS
approved