%I A072076
%S A072076 22,250,3750,41250,414150,4166250,42281250,438281250,4400343750,
%T A072076 44266406250
%N A072076 Largest solution to EulerPhi[x]=10^n.
%F A072076 a(n)=Max{x; A000010[x]=10^n}
%e A072076 n=3: a(3)=3750 because InvPhi[1000]= {1111,1255,1375,1875,2008,2222,2500,
               2510,2750,3012,3750}.
%Y A072076 Cf. A000010, A014573, A014197.
%Y A072076 Sequence in context: A041930 A125410 A109251 this_sequence A028571 A010974 
               A022587
%Y A072076 Adjacent sequences: A072073 A072074 A072075 this_sequence A072077 A072078 
               A072079
%K A072076 more,nonn
%O A072076 1,1
%A A072076 Labos E. (labos(AT)ana.sote.hu), Jun 13 2002