OFFSET
1,1
COMMENTS
Row 5 of A209073.
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.: 2*x*(4 + 23*x + 45*x^2 + 66*x^3 + 64*x^4 + 49*x^5 + 21*x^6 + 4*x^7) / ((1 - x)^5*(1 + x)*(1 + x^2)*(1 + x + x^2)). - Colin Barker, Jul 08 2018
EXAMPLE
Some solutions for n=6:
-6 -3 -6 -3 -4 -4 -6 -2 -3 -3 -5 -4 -6 -3 -4 -3
3 0 5 -1 5 -1 6 -2 1 5 -4 5 3 -1 1 1
3 -1 0 -3 -1 6 2 0 2 -2 6 4 6 2 6 0
4 0 -3 3 0 0 -3 2 1 0 6 -3 -2 4 -2 -1
-4 4 4 4 0 -1 1 2 -1 0 -3 -2 -1 -2 -1 3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 04 2012
STATUS
approved