Search: id:A132394
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%I A132394
%S A132394 2,3,5,7,13,23,43,53,73,83,17,37,47,67,97,113,313,613,223,523,823,443,
%T A132394 643,743,353,653,853,953,173,373,673,773,283,383,683,883,983,317,617,
%U A132394 137,337,937,347,547,647,947,167,367,467,967,197,397,797,997,2113
%N A132394 Left-truncatable primes in the order generated (with no zero digits).
%C A132394 The most logical way of generating the Left-truncatable primes genetates 
               them in this order. Last term is a(4260)=357686312646216567629137.
%D A132394 Angell, I. O. and Godwin, H. J. "On Truncatable Primes." Math. Comput. 
               31, 265-267, 1977.
%H A132394 H. J. Smith, <a href="b132394.txt">Table of n, a(n) for n = 1..4260</
               a>
%H A132394 <a href="Sindx_Tri.html#tprime">Index entries for sequences related to 
               truncatable primes</a>
%H A132394 H. J. Smith, <a href="http://harry-j-smith.com/hjsmithh/download.html#Left-Tru">
               Link to program to generate this sequense and its output file.</a>
%o A132394 (PARI) {fileO="b132394.txt";v=vector(4260);v[1]=2;v[2]=3;v[3]=5;v[4]=7;
               i=0;j=4; write(fileO,"1 2");write(fileO,"2 3");write(fileO,"3 5");
               write(fileO,"4 7"); until(i>=j,i++;p=v[i];P10=10^(1+log(p)\log(10)); 
               for(k=1,9,z=k*P10+p;if(isprime(z),j++;v[j]=z;write(fileO,j," ",z);
               )));} [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Sep 18 2008]
%Y A132394 Cf. A024785.
%Y A132394 Sequence in context: A048413 A064336 A126092 this_sequence A006992 A080190 
               A076994
%Y A132394 Adjacent sequences: A132391 A132392 A132393 this_sequence A132395 A132396 
               A132397
%K A132394 base,fini,nonn
%O A132394 1,1
%A A132394 Harry J. Smith (hjsmithh(AT)sbcglobal.net), Nov 11 2007

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