3882139

Appears in sequences

• Numbers that occur more than once in A193873, in order of appearance.at n=18A194263
• Squarefree numbers (A005117) of the form p*q*r with prime factors p, q, r with q = 2*p-1 and r = 2*q-1.at n=2A231815
• Super pseudoprimes to base 3 (A328662) with more than two prime factors (counted with multiplicity).at n=5A328663