A number k belongs to the sequence if k = 1 or k is divisible by its prime shadow A181819(k) and the quotient k/A181819(k) also belongs to the sequence.
A325756
A number k belongs to the sequence if k = 1 or k is divisible by its prime shadow A181819(k) and the quotient k/A181819(k) also belongs to the sequence.
Terms
- a(0) =1a(1) =2a(2) =12a(3) =336a(4) =360a(5) =45696a(6) =52416a(7) =75600a(8) =22665216a(9) =31804416a(10) =42928704a(11) =77792400a(12) =92610000a(13) =164656800a(14) =174636000
External references
- oeis: A325756