-1465

Appears in sequences

• a(0) = -1, otherwise a(n) = (-1)^n*(n^3 - 15*n^2 + 2*n - 12)/6.at n=27A173248
• G.f.: 2 - x/(1+2*x - x^3/(1+2*x^2 - x^5/(1+2*x^3 - x^7/(1+2*x^4 - x^9/(1+2*x^5 - x^11/(1 - ...)))))), a continued fraction.at n=13A275762