Search: id:A130506
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%I A130506
%S A130506 1,2,42,24024,43609104000,1315041316842168115200000
%N A130506 a(1)=1; a(n) = prod(n^2 - p(n-1) + r, r=0..2^(n-2)-1) if n > 1, where 
               p(i) is the i-th prime.
%C A130506 The first four terms agree with a Riemann Hypothesis related sequence.
%D A130506 Marcus du Sautoy, "The Music of the Primes", Harper Collins, 2003.
%e A130506 a(4) = 24024 because 24024 = (16 - 5 + 0)*(16 - 5 + 1)*(16 - 5 + 2)*(16 
               - 5 + 3).
%Y A130506 Cf. A039622.
%Y A130506 Sequence in context: A124103 A152286 A039622 this_sequence A052078 A069544 
               A085460
%Y A130506 Adjacent sequences: A130503 A130504 A130505 this_sequence A130507 A130508 
               A130509
%K A130506 easy,nonn
%O A130506 1,2
%A A130506 Ben de la Rosa & Johan Meyer (meyerjh.sci(AT)ufs.ac.za), Aug 08 2007

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