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A020237 Strong pseudoprimes to base 11. 5

%I

%S 133,793,2047,4577,5041,12403,13333,14521,17711,23377,43213,43739,

%T 47611,48283,49601,50737,50997,56057,58969,68137,74089,85879,86347,

%U 87913,88831,102173,111055,114211,115231,137149,139231,171601,172369,193249,196555

%N Strong pseudoprimes to base 11.

%H Amiram Eldar, <a href="/A020237/b020237.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..636 from R. J. Mathar)

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

%o (PARI) /* insert A001262 code here */

%o isA020237(n)={

%o isStrongPsp(n,11)

%o }

%o {

%o for(n=1,10000000000,

%o if(isA020237(n), print(n) ;) ;

%o ) ;

%o } /* _R. J. Mathar_, Mar 07 2012 */

%Y Cf. A020139, A001262, A020229, A020230, A020231, A020232, A020233, A020234, A020235, A020236.

%K nonn

%O 1,1

%A _David W. Wilson_

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Last modified August 4 09:03 EDT 2020. Contains 336201 sequences. (Running on oeis4.)