OFFSET
1,1
COMMENTS
Column 5 of A259742.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-2) +24*a(n-4) +17*a(n-6) -53*a(n-8) +26*a(n-10) +9*a(n-12) -13*a(n-14) +a(n-16) +a(n-18) for n>19.
EXAMPLE
Some solutions for n=4
..1..0..0..0..1..0..0....1..0..1..0..1..0..1....0..1..0..1..0..0..0
..0..1..0..1..0..1..0....0..0..0..1..0..1..0....1..0..1..0..1..0..1
..1..0..1..0..1..0..1....1..0..1..0..1..0..1....0..1..0..1..0..1..0
..0..1..0..0..0..1..0....0..1..0..1..0..1..0....1..0..1..0..1..0..1
..0..0..1..0..1..0..0....0..0..1..0..1..0..1....0..0..0..1..0..1..0
..0..1..0..1..0..1..0....0..1..0..1..0..1..0....1..0..1..0..0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 04 2015
STATUS
approved