Smallest pentagonal number with n distinct prime factors.
A156236
Smallest pentagonal number with n distinct prime factors.
Terms
- a(0) =5a(1) =12a(2) =70a(3) =210a(4) =11310a(5) =145860a(6) =1560090a(7) =23130030a(8) =2491434660a(9) =200736225690
External references
- oeis: A156236