a(n) is the least integer m such that A047994(m) = ((n-1)/n)*m where A047994 is the unitary totient function, or 0 if there is no such m.

A318842

a(n) is the least integer m such that A047994(m) = ((n-1)/n)*m where A047994 is the unitary totient function, or 0 if there is no such m.

Terms

    a(0) =2a(1) =3a(2) =4a(3) =5a(4) =144a(5) =7a(6) =8a(7) =9a(8) =400a(9) =11a(10) =64281600a(11) =13a(12) =84672a(13) =129600a(14) =16a(15) =17a(16) =518400a(17) =19a(19) =254016a(21) =23a(23) =25a(24) =2747437056a(25) =27a(26) =3136a(27) =29a(29) =31a(30) =32

External references