305320

Appears in sequences

• a(n) = 1 + prime(n) + prime(n)^2 + prime(n)^3.at n=18A131991
• Let x be the sum of the divisors d_i of k such that d_i | sigma(k). Sequence lists the numbers k for which x^3 = sigma(k).at n=9A284284
• Position of 30^n among 5-smooth numbers A051037.at n=38A372400