Numbers m such that (m'+1)' = m-1, where m' is the arithmetic derivative of m.
A203618
Numbers m such that (m'+1)' = m-1, where m' is the arithmetic derivative of m.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =42a(4) =104a(5) =120a(6) =165a(7) =245a(8) =272a(9) =561a(10) =1806a(11) =47058a(12) =765625a(13) =1137501a(14) =3874128a(15) =9131793a(16) =2214502422a(17) =52495396602
External references
- oeis: A203618