12393728

Appears in sequences

• Smallest number k such that k and k+1 are both of the form p*q^n where p and q are distinct primes.at n=7A215199
• a(n) is the least number k such that A048105(k) = A048105(k+1) = 2*n, and 0 if it does not exist.at n=7A344315