581120892

Appears in sequences

• Expansion of 1/((1-3*x)*(1-9*x)).at n=9A016142
• a(n) = n! * Sum_{i+2j+3k=n} 1/(i!*(2j)!*(3k)!).at n=20A094717
• a(n) = Sum_{d|n} Moebius(n/d)*d^(b-1)/phi(n) for b = 11.at n=8A160957
• Expansion of x^2/((3*x-1)*(3*x^2-1)).at n=20A167993