Largest inverse of totient function (A000010): a(n) is the largest x such that phi(x)=m, where m=A002202(n) is the n-th number in the range of phi.
2, 6, 12, 18, 30, 22, 42, 60, 54, 66, 46, 90, 58, 62, 120, 126, 150, 98, 138, 94, 210
2 seqfan posts
Mon Sep 20 04:09:06 CEST 2010 [seqfan] Re: Nonmembers of Range of Euler Phi Function