OFFSET
1,2
COMMENTS
Column 3 of A217346
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..53
FORMULA
Empirical: a(n) = 23*a(n-1) -125*a(n-2) +13*a(n-3) +648*a(n-4) -208*a(n-5) -1279*a(n-6) +327*a(n-7) +1739*a(n-8) -1293*a(n-9) +138*a(n-10) +130*a(n-11) +8*a(n-12)
EXAMPLE
Some solutions for n=3
..0..0..0....1..2..1....0..2..1....1..1..0....0..0..0....1..1..1....0..0..0
..2..2..2....1..0..1....1..2..1....2..2..0....2..3..1....2..1..2....1..3..2
..1..1..1....1..1..1....1..1..0....1..2..0....1..2..0....1..0..0....0..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 01 2012
STATUS
approved