OFFSET
1,1
COMMENTS
Column 3 of A217645
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..71
FORMULA
Empirical: a(n) = 5*a(n-1) +3*a(n-2) +9*a(n-3) -10*a(n-4) -7*a(n-5) -166*a(n-6) -3*a(n-7) -122*a(n-8) -71*a(n-9) +165*a(n-10) +43*a(n-11) -43*a(n-12) -7*a(n-13) +3*a(n-14) for n>15
EXAMPLE
Some solutions for n=3
..0..0..2....0..0..0....1..0..0....0..0..1....0..0..0....0..0..2....0..0..0
..0..1..2....0..0..0....1..0..0....0..1..2....0..0..0....0..1..1....0..0..0
..1..2..2....1..2..2....0..0..0....2..2..2....0..1..2....1..1..1....2..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 09 2012
STATUS
approved