OFFSET
1,2
COMMENTS
Column 2 of A240774
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 12*a(n-1) -36*a(n-2) +4*a(n-3) +51*a(n-4) +74*a(n-5) -105*a(n-6) -60*a(n-7) +22*a(n-8) +66*a(n-9) -27*a(n-10) for n>11
EXAMPLE
Some solutions for n=4
..0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1
..2..3....2..3....1..2....1..0....1..2....2..0....2..2....1..0....1..0....2..3
..0..1....1..2....3..1....0..2....0..1....0..2....2..2....0..1....0..1....3..2
..1..3....3..0....2..0....2..3....3..0....2..1....0..1....2..3....1..2....1..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 12 2014
STATUS
approved