Numbers n such that A017666(n)=phi(n).

Terms

a(0) =1a(1) =18a(2) =72a(3) =162a(4) =648a(5) =1152a(6) =1458a(7) =4608a(8) =5832a(9) =10368a(10) =13122a(11) =41472a(12) =52488a(13) =73728a(14) =93312a(15) =118098a(16) =294912a(17) =373248a(18) =472392a(19) =663552a(20) =839808a(21) =1062882a(22) =2654208a(23) =3359232a(24) =4251528a(25) =4718592a(26) =5971968a(27) =7558272a(28) =9565938a(29) =18874368