OFFSET
1,1
COMMENTS
Column 4 of A261113.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +6*a(n-3) +8*a(n-4) +10*a(n-5) +11*a(n-6) +7*a(n-7) +a(n-8) -7*a(n-9) -6*a(n-10) +a(n-11) +3*a(n-12) +a(n-13) for n>14.
EXAMPLE
Some solutions for n=4
..0..0..1..0..0..0....0..1..0..0..0..1....0..0..0..1..0..0....0..0..1..0..1..0
..0..0..0..1..0..1....1..0..1..0..1..0....1..0..1..0..1..0....0..0..0..1..0..0
..1..0..1..0..1..0....0..1..0..1..0..1....0..1..0..1..0..1....1..0..1..0..1..0
..0..1..0..1..0..1....1..0..1..0..1..0....1..0..1..0..1..0....0..1..0..0..0..1
..1..0..1..0..0..0....0..1..0..1..0..1....0..1..0..1..0..0....1..0..1..0..1..0
..0..0..0..1..0..1....0..0..1..0..1..0....1..0..1..0..1..0....0..0..0..1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 08 2015
STATUS
approved