-8995

Appears in sequences

• a(n) = -a(n-6) + 3*a(n-5) + a(n-4) - 7*a(n-3) + a(n-2) + 3*a(n-1).at n=15A122504
• G.f.: Sum_{n>=0} (2*n+1) * x^n * (1 - x^n)^n.at n=52A326607