OFFSET
1,1
COMMENTS
Column 1 of A260767
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-3) +3*a(n-4) +2*a(n-5) +5*a(n-6) +5*a(n-8) +2*a(n-9) +3*a(n-10) +4*a(n-11) +2*a(n-12) +6*a(n-13) +a(n-14) for n>15
EXAMPLE
Some solutions for n=4
..0..0..1....0..0..1....0..1..1....0..0..1....1..0..0....0..0..1....1..1..0
..0..0..1....0..1..0....0..1..0....0..1..1....1..1..0....0..1..1....0..1..0
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..1..0
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..1..0..0....0..1..0....0..0..1....0..1..0....1..0..0....0..0..1....0..0..0
..1..0..0....0..0..1....0..0..0....1..1..0....0..0..0....0..0..0....1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 30 2015
STATUS
approved