Least semiprime having prime factors that differ by 2*n!.
A190662
Least semiprime having prime factors that differ by 2*n!.
Terms
- a(0) =15a(1) =21a(2) =85a(3) =265a(4) =2761a(5) =10129a(6) =111001a(7) =887161a(8) =21047881a(9) =210471241a(10) =1037836969a(11) =68018232241a(12) =361167207241
External references
- oeis: A190662