-1661

Appears in sequences

• Expansion of sin(sin(x)*cos(x)).at n=3A009481
• Expansion of Product_{k>=1} (1 - x^k)^11.at n=21A010819
• Expansion of psi(x^6) / psi(x) in powers of x where psi() is a Ramanujan theta function.at n=31A262160