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%I A002200 M0654 N0242
%S A002200 2,3,5,7,11,13,17,19,31,37,41,61,73,97,101,109,151,163,181,193,241,251,
%T A002200 257,271,401,433,487,541,577,601,641,751,769,811,1153,1201,1297,1459,
%U A002200 1601,1621,1801,2161,2251,2593,2917,3001,3457,3889,4001,4051,4801,4861
%N A002200 Primes of the form 2^q*3^r*5^s + 1.
%D A002200 M. Kraitchik, Recherches sur la Th\'{e}orie des Nombres. Gauthiers-Villars, 
               Paris, Vol. 1, 1924, Vol. 2, 1929, see Vol. 1, p. 53.
%D A002200 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A002200 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%H A002200 Harry J. Smith, <a href="b002200.txt">Table of n, a(n) for n=1,...,200</
               a>
%o A002200 (PARI) { default(primelimit, 16600000); n=0; forprime (p=2, 16600000, 
               m=p-1; p2=p3=p5=0; s=m; r=0; while(r==0, q=s\2; r=s-2*q; s=q; if(r==0, 
               p2++)); s=m; r=0; while(r==0, q=s\3; r=s-3*q; s=q; if(r==0, p3++)); 
               s=m; r=0; while(r==0, q=s\5; r=s-5*q; s=q; if(r==0, p5++)); if (m 
               == 2^p2*3^p3*5^p5, n++; write("b002200.txt", n, " ", p)); if (n >
               = 200, break); ); } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), 
               May 25 2009]
%Y A002200 Sequence in context: A079150 A117843 A068192 this_sequence A069709 A144755 
               A069090
%Y A002200 Adjacent sequences: A002197 A002198 A002199 this_sequence A002201 A002202 
               A002203
%K A002200 nonn
%O A002200 1,1
%A A002200 N. J. A. Sloane (njas(AT)research.att.com).
%E A002200 Better description and more terms from Vladeta Jovovic (vladeta(AT)eunet.rs), 
               May 08 2003

    
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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