Numbers n such that d(n) = phi(n+1) - phi(n), where d(n) denotes the number of divisors of n.
A066171
Numbers n such that d(n) = phi(n+1) - phi(n), where d(n) denotes the number of divisors of n.
Terms
- a(0) =6a(1) =74a(2) =315a(3) =344a(4) =5313a(5) =17534a(6) =23655a(7) =27027a(8) =46035a(9) =54494a(10) =56865a(11) =139814a(12) =13437105a(13) =454166115a(14) =2403502647a(15) =4590102525a(16) =38645268615a(17) =96891671331
External references
- oeis: A066171