Search: id:A096100
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%I A096100
%S A096100 1,2,2,3,6,46,1306,7695,17383720,2183805400
%N A096100 a(1) = 1; for n > 1: a(n) = smallest number >1 such that product of any 
               two or more successive terms + 1 is prime.
%C A096100 Next term > 20000000 if it exists..
%e A096100 a(4) is not 2 since 2*2*2+1 = 9 is composite, but 2*3+1 = 7, 2*2*3+1 
               = 13, 1*2*2*3+1 = 13 are all prime, hence a(4) = 3.
%Y A096100 Sequence in context: A166678 A032908 A060631 this_sequence A021451 A134232 
               A123934
%Y A096100 Adjacent sequences: A096097 A096098 A096099 this_sequence A096101 A096102 
               A096103
%K A096100 more,nonn
%O A096100 1,2
%A A096100 Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jun 24 2004
%E A096100 Edited, corrected and extended by Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), 
               Jul 05 2004
%E A096100 a(10) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Apr 22 2008

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