OFFSET
1,1
COMMENTS
Row 2 of A240364
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) +9*a(n-2) -23*a(n-3) -15*a(n-4) +30*a(n-5) +20*a(n-6) +7*a(n-7) -30*a(n-8) +a(n-9) +23*a(n-10) -8*a(n-11) -8*a(n-12)
EXAMPLE
Some solutions for n=4
..3..3..1..3....0..0..0..0....0..3..1..3....0..0..3..1....3..1..3..1
..0..2..2..2....3..1..3..1....3..3..2..0....0..0..0..2....0..0..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 04 2014
STATUS
approved