Search: id:A126788
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%I A126788
%S A126788 2,2,2,2,5,11,17,11,11,37,51,23,127,53,37,1427,23,11,491,11,1429,139,83,
%T A126788 547,233,881,149,47,313,2,463,857,1367,2269,2221,8171,317,619,3727,227,
%U A126788 173,2251,1091,13,439,277,1597,433,173,1303,2927,1367,6679,4903,1979
%N A126788 Least prime q such that q*p(n)# -1 and q*p(n)# +1 are twin primes where 
               p(i)#=i-th primorial.
%H A126788 Milan Janjic, <a href="http://www.pmfbl.org/janjic/">Enumerative Formulas 
               for Some Functions on Finite Sets</a>
%e A126788 2*(2*3*5*7) -1 = 419
%e A126788 2*(2*3*5*7) +1 = 421
%e A126788 419 and 421 twin primes, 2*3*5*7 = p(4)# so q(4)=2
%Y A126788 Sequence in context: A118486 A141299 A035681 this_sequence A098789 A162489 
               A079894
%Y A126788 Adjacent sequences: A126785 A126786 A126787 this_sequence A126789 A126790 
               A126791
%K A126788 nonn
%O A126788 1,1
%A A126788 Pierre CAMI (pierrecami(AT)tele2.fr), Feb 19 2007

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