72670

Appears in sequences

• a(n) = prime(prime(prime(A028815(n) - 1) - 1) - 1) - 1.at n=37A141133
• Numbers n such that n^2 + 3, n^3 + 3, n^4 + 3, n^5 + 3, n^6 + 3 and n^7 + 3 are semiprime.at n=11A253907