-866

Appears in sequences

• McKay-Thompson series of class 12G for Monster.at n=25A058485
• a(n) = a(n-1) - 4*a(n-2), a(0)=1, a(1)=2.at n=16A133631
• Numerator of Hermite(n, 2/21).at n=2A159706
• Expansion of f(-x^3, -x^5)^2 / (psi(-x) * psi(x^2)) in powers of x where psi() is a Ramanujan theta function and f(, ) is Ramanujan's general theta functions.at n=54A245433
• Expansion of Product_{k>=1} (1 + k*x^k)/(1 + 2*x^k).at n=11A269154