OFFSET
1,1
COMMENTS
Column 4 of A253367
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 9*a(n-2) -32*a(n-4) +60*a(n-6) +4*a(n-8) +16*a(n-10) -32*a(n-12) +16*a(n-14) for n>16
EXAMPLE
Some solutions for n=4
..0..1..0..0..0..0....0..1..0..1..0..0....1..0..1..0..1..0....0..1..1..1..1..1
..1..0..0..0..1..0....1..0..0..0..0..0....0..0..0..0..0..0....0..0..1..0..1..0
..0..1..0..1..0..0....0..1..0..1..0..1....1..0..1..0..1..0....1..1..1..1..0..1
..1..0..0..0..0..0....0..0..0..0..0..0....0..1..0..0..0..1....1..0..1..0..1..1
..0..0..0..1..0..1....1..1..0..1..0..1....0..0..1..0..1..0....1..1..1..1..0..1
..1..0..1..0..0..0....1..0..0..0..0..0....1..1..0..0..0..1....1..0..1..0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 30 2014
STATUS
approved