Numbers that are equal to the arithmetic derivative of their cototient.

Terms

a(0) =12a(1) =32a(2) =44a(3) =332a(4) =5103a(5) =10935a(6) =12555a(7) =59049a(8) =69255a(9) =94041a(10) =185895a(11) =1114641a(12) =1265625a(13) =1453125a(14) =3639916a(15) =8015625a(16) =10475212a(17) =10521657a(18) =12254625a(19) =21515625a(20) =146484375a(21) =155649627a(22) =178598385a(23) =244603436a(24) =362087739a(25) =1408107267a(26) =1540368225a(27) =2186172700a(28) =2490234375