login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A020246 Strong pseudoprimes to base 20. 1

%I #11 Aug 04 2015 06:26:06

%S 21,671,889,1891,2059,2761,5461,7999,13051,15311,16441,21667,25681,

%T 34861,37901,38989,42127,49771,50737,54811,64681,68251,78961,85591,

%U 88831,92509,93031,96049,97921,105001,109061,111361,114841,123713,143009,145351

%N Strong pseudoprimes to base 20.

%H R. J. Mathar, <a href="/A020246/b020246.txt">Table of n, a(n) for n = 1..208</a>

%H <a href="/index/Ps#pseudoprimes">Index entries for sequences related to pseudoprimes</a>

%K nonn

%O 1,1

%A _David W. Wilson_

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)