OFFSET
1,1
COMMENTS
Column 6 of A253367
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 16*a(n-2) -110*a(n-4) +432*a(n-6) -809*a(n-8) +2032*a(n-10) -4696*a(n-12) +4432*a(n-14) -2272*a(n-16) -1952*a(n-18) -224*a(n-20) +320*a(n-22) for n>26
EXAMPLE
Some solutions for n=4
..0..1..0..1..0..1..0..1....0..1..0..1..0..1..0..1....1..1..1..1..1..0..1..1
..0..0..0..0..0..0..0..0....1..1..1..1..1..1..1..1....0..1..0..1..1..1..0..1
..0..1..0..1..0..1..0..1....0..1..0..1..0..1..0..1....1..0..1..0..1..0..1..1
..1..0..0..0..0..0..0..0....1..1..1..1..1..1..1..1....0..1..1..1..1..1..0..1
..1..1..0..1..0..1..0..1....0..1..0..1..0..1..0..1....1..0..1..0..1..1..1..1
..1..1..1..0..0..0..0..0....1..1..1..0..1..0..0..0....0..1..1..1..0..1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 30 2014
STATUS
approved