OFFSET
1,2
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 9*a(n-1) + 86*a(n-2) + 190*a(n-3) - 29*a(n-4) + a(n-5).
Empirical g.f.: 2*x^2*(1 - x)*(3 + 14*x - x^2) / (1 - 9*x - 86*x^2 - 190*x^3 + 29*x^4 - x^5). - Colin Barker, Sep 28 2018
EXAMPLE
Some solutions for n=3:
..0..1..0..3....0..1..2..0....0..1..0..2....0..1..2..1....0..1..0..2
..2..3..1..2....0..3..1..0....2..3..3..0....0..3..3..0....2..3..3..2
..2..0..3..2....1..2..3..2....1..2..1..0....2..2..1..0....2..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 06 2013
STATUS
approved