Search: id:A034276
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%I A034276
%S A034276 11,29,2,5,41,251,43,145577,51941,4372877
%N A034276 Smallest prime that generates a prime pyramid of height n.
%C A034276 Let p be prime; look for smallest prime that has previous term as a centered 
               substring and has 2 more digits; repeat until no such prime can be 
               found; then height(p) = number of rows in pyramid.
%H A034276 H. Heinz, Patterns in Primes, <a href="http://www.geocities.com/~harveyh/
               primes.htm">Illustrating Two Prime Pyramids</a>
%e A034276 Example for p=43: 43 3433 334333 93343339 3933433393 939334333939 39393343339393, 
               stop; height(43)=7.
%Y A034276 Cf. A047076, A053600, A052205, A046210, A052091, A052092.
%Y A034276 Sequence in context: A140677 A018944 A061086 this_sequence A072711 A005110 
               A059337
%Y A034276 Adjacent sequences: A034273 A034274 A034275 this_sequence A034277 A034278 
               A034279
%K A034276 nonn,nice,base
%O A034276 1,1
%A A034276 Felice Russo (felice.russo(AT)katamail.com), Jan 25 2000
%E A034276 More terms from Naohiro Nomoto (6284968128(AT)geocities.co.jp), Jul 14 
               2001

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