OFFSET
1,1
COMMENTS
Column 3 of A235962
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 9*a(n-1) -a(n-2) -189*a(n-3) +346*a(n-4) +1436*a(n-5) -4035*a(n-6) -4541*a(n-7) +20333*a(n-8) +2377*a(n-9) -52394*a(n-10) +19916*a(n-11) +68520*a(n-12) -46336*a(n-13) -39744*a(n-14) +35328*a(n-15) +7168*a(n-16) -8192*a(n-17)
EXAMPLE
Some solutions for n=4
..1..0..1..0....0..1..1..1....0..0..1..1....1..0..1..0....0..0..0..1
..0..0..0..1....1..1..0..0....0..0..0..0....1..1..0..1....0..0..0..1
..0..0..0..1....1..1..1..1....0..0..0..1....1..1..1..0....1..0..1..0
..0..0..0..0....0..1..0..1....1..0..0..0....0..1..0..0....1..1..1..0
..1..0..1..0....0..0..0..0....0..0..1..0....1..1..1..0....1..1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 17 2014
STATUS
approved