A032671 - OEIS

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A032671

Digit '8' concatenated with a(n) is a prime.

%I #9 Sep 03 2017 08:34:40

%S 3,9,11,21,23,27,29,39,53,57,59,63,77,81,83,87,101,111,117,123,147,

%T 161,167,171,179,191,209,219,221,231,233,237,243,263,269,273,287,291,

%U 293,297,311,317,329,353,363,369,377,387,389,419,423,429,431,443,447

%N Digit '8' concatenated with a(n) is a prime.

%H Seiichi Manyama, <a href="/A032671/b032671.txt">Table of n, a(n) for n = 1..10000</a>

%K nonn,base

%O 1,1

%A _Patrick De Geest_, May 15 1998