1201560

Appears in sequences

• Numbers k such that sigma(k) = phi(k)*(sum of the digits of k).at n=6A140173
• Numbers n such that sigma(n) = 15*phi(n) (where sigma=A000203, phi=A000010).at n=20A171260
• Coefficient of x^n in the expansion of (1+x^3+x^4)^n.at n=21A192442