OFFSET
1,1
COMMENTS
Row 5 of A209115.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) - 3*a(n-2) + 2*a(n-3) - 2*a(n-4) + 2*a(n-6) - 2*a(n-7) + 3*a(n-8) - 3*a(n-9) + a(n-10).
Empirical g.f.: x*(5 + 48*x + 87*x^2 + 137*x^3 + 127*x^4 + 103*x^5 + 39*x^6 + 5*x^7 + 2*x^8 - x^9) / ((1 - x)^5*(1 + x)*(1 + x^2)*(1 + x + x^2)). - Colin Barker, Jul 08 2018
EXAMPLE
Some solutions for n=6:
-5 -6 -3 -5 -6 -6 -6 -6 -5 -5 -4 -3 -1 -4 -4 -4
-2 4 -1 3 1 -6 -1 2 -4 3 4 -1 -1 -3 -2 0
6 -6 -2 -1 1 5 1 6 0 -3 -2 1 1 1 5 4
-5 4 5 6 5 2 6 3 4 0 3 0 0 4 -3 3
6 4 1 -3 -1 5 0 -5 5 5 -1 3 1 2 4 -3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 05 2012
STATUS
approved