OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) + a(n-2) - a(n-3) - 5*a(n-4) - 8*a(n-5) + 3*a(n-6).
Empirical g.f.: x*(61 + 10*x - 91*x^2 - 150*x^3 - 185*x^4 + 75*x^5) / (1 - 3*x - x^2 + x^3 + 5*x^4 + 8*x^5 - 3*x^6). - Colin Barker, Nov 04 2018
EXAMPLE
Some solutions for n=8:
1 1 0 4 1 3 2 0 0 0 1 4 2 2 1 3
2 4 1 1 0 0 2 1 2 4 0 0 3 2 3 0
3 0 3 3 4 4 0 3 2 4 3 1 1 0 1 4
2 4 1 0 3 0 4 1 1 0 1 4 2 4 2 2
2 4 1 4 1 3 2 2 2 4 1 0 3 0 2 2
0 0 3 0 3 1 2 2 3 2 3 3 1 1 2 0
2 4 3 4 2 0 0 4 1 2 4 1 0 3 2 4
2 3 1 0 1 3 2 0 3 1 0 4 4 1 4 3
0 1 3 4 2 1 2 2 4 3 1 0 0 4 0 0
2 4 1 3 2 3 4 2 1 3 4 1 1 0 4 1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 04 2014
STATUS
approved