OFFSET
1,1
COMMENTS
Column 5 of A207949
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) +4*a(n-2) +74*a(n-4) +78*a(n-5) +56*a(n-6) +272*a(n-7) +207*a(n-8) -126*a(n-9) -388*a(n-10) -296*a(n-11) +36*a(n-12) +152*a(n-13) +132*a(n-14) -16*a(n-16) -22*a(n-17) +a(n-20)
EXAMPLE
Some solutions for n=4
..1..1..1..0..1....1..0..0..0..0....1..1..1..1..1....1..1..0..0..0
..0..0..0..0..0....0..0..0..0..0....0..1..0..1..0....0..1..0..1..0
..0..0..0..0..0....0..1..0..0..0....0..1..0..1..0....0..1..0..1..0
..1..0..1..0..1....0..1..0..0..0....1..1..1..1..0....0..0..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 21 2012
STATUS
approved