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Smallest number k such that there are exactly n relatively prime numbers using all digits of k.
1

%I #7 Jan 03 2022 21:17:40

%S 1,13,101,130,125,103,1016,1078,1034,1036,1085,1003,1052,2975,1358,

%T 1435,1067,1295,1285,1547,1057,1037,1073,1027,10025,11557,11323,10031,

%U 10013,10019,10790,10712,10136,10132,10336,10165,10087,11275,10892,10234

%N Smallest number k such that there are exactly n relatively prime numbers using all digits of k.

%e a(2) = 101 as the three relatively prime numbers using all the digits of 101 are 110 and 011.

%Y Cf. A075603.

%K base,nonn

%O 0,2

%A _Amarnath Murthy_, Sep 28 2002

%E More terms from _Sean A. Irvine_, Sep 14 2009