login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A032666 Digit '3' concatenated with a(n) is a prime. 4

%I

%S 1,7,11,13,17,31,37,47,49,53,59,67,73,79,83,89,97,109,119,121,137,163,

%T 167,169,181,187,191,203,209,217,221,229,251,253,257,259,271,299,301,

%U 307,313,319,323,329,331,343,347,359,361,371,373,389,391

%N Digit '3' concatenated with a(n) is a prime.

%H Seiichi Manyama, <a href="/A032666/b032666.txt">Table of n, a(n) for n = 1..10000</a>

%K nonn,base

%O 1,2

%A _Patrick De Geest_, May 15 1998

%E Edited by _Charles R Greathouse IV_, Aug 02 2010

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 31 12:41 EDT 2020. Contains 338101 sequences. (Running on oeis4.)