1607485776

Appears in sequences

• Expansion of (1+3x+x^2)/(1-3x+x^2).at n=21A099857
• a(n) = Fibonacci(n)*A132973(n) for n>=1, with a(0)=1, where A132973 lists the coefficients in psi(-q)^3/psi(-q^3) and where psi() is a Ramanujan theta function.at n=42A205970