OFFSET
1,1
COMMENTS
Column 6 of A253524
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 9*a(n-1) -33*a(n-2) +65*a(n-3) -75*a(n-4) +51*a(n-5) -19*a(n-6) +3*a(n-7) for n>15
EXAMPLE
Some solutions for n=1
..0..1..2..0..0..2..0....0..1..2..1..0..0..2....0..1..0..2..0..1..1
..2..1..2..0..0..1..0....0..1..2..1..0..0..0....2..0..0..0..0..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 03 2015
STATUS
approved