Numbers k such that k is the uphi(k)-th composite number, where uphi is the unitary totient function.
A300479
Numbers k such that k is the uphi(k)-th composite number, where uphi is the unitary totient function.
Terms
- a(0) =6a(1) =12a(2) =15a(3) =21a(4) =24a(5) =28a(6) =36a(7) =52a(8) =68a(9) =76a(10) =265a(11) =295a(12) =2681a(13) =8104a(14) =21413a(15) =174757a(16) =1302197a(17) =15536176a(18) =20149241a(19) =25873648a(20) =237875719a(21) =358334927
External references
- oeis: A300479