OFFSET
1,1
COMMENTS
Column 2 of A253698
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-2) +2*a(n-3) -2*a(n-4) -a(n-5) -7*a(n-6) -3*a(n-7) +9*a(n-8) +3*a(n-9) +a(n-10) -a(n-11) -6*a(n-12) +4*a(n-14) -a(n-16)
EXAMPLE
Some solutions for n=4
..1..0..1....1..1..1....0..0..1....1..1..0....0..1..0....0..0..1....0..0..1
..1..1..0....0..1..1....1..0..1....0..1..0....0..1..1....1..1..0....0..0..0
..0..0..1....1..0..0....1..1..0....0..0..1....1..0..0....1..1..0....0..1..1
..1..0..0....0..1..0....0..0..1....1..1..0....0..1..0....0..0..1....1..0..1
..0..1..1....0..0..0....1..0..0....0..1..0....1..1..0....1..0..0....1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 09 2015
STATUS
approved