OFFSET
1,1
COMMENTS
Column 3 of A250691.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 27*a(n-1) -331*a(n-2) +2439*a(n-3) -12049*a(n-4) +42129*a(n-5) -107225*a(n-6) +201069*a(n-7) -277706*a(n-8) +278928*a(n-9) -197984*a(n-10) +94032*a(n-11) -26784*a(n-12) +3456*a(n-13) for n>17.
EXAMPLE
Some solutions for n=3
..3..3..0..0....0..0..0..0....2..3..2..0....3..2..0..1....2..2..2..2
..2..2..1..1....3..3..3..3....2..3..2..1....3..2..1..2....1..1..1..1
..1..1..0..0....0..0..0..0....1..2..1..0....3..2..1..2....1..1..2..2
..0..0..1..2....0..2..3..3....0..3..2..3....2..1..2..3....0..2..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 26 2014
STATUS
approved