a(n) is the least integer m such that A047994(m) = ((n-2)/n)*m where A047994 is the unitary totient function, or 0 if there is no such m.
A319313
a(n) is the least integer m such that A047994(m) = ((n-2)/n)*m where A047994 is the unitary totient function, or 0 if there is no such m.
Terms
- a(0) =6a(1) =2a(2) =20a(3) =3a(4) =1008a(5) =4a(6) =72a(7) =5a(8) =4400a(9) =144a(10) =835660800a(11) =7a(12) =10800a(13) =8a(14) =272a(15) =9a(16) =9849600a(17) =400a(18) =208039104a(19) =11a(21) =64281600a(23) =13a(24) =1296a(25) =84672a(26) =90944a(27) =129600a(29) =16a(30) =250905600a(31) =17a(33) =518400
External references
- oeis: A319313