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A057470
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Let p(i) =i-th prime, let twin(n) = (P,Q) be n-th pair of twin primes; sequence gives p(P).
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7
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5, 11, 31, 59, 109, 179, 277, 353, 547, 587, 773, 859, 1063, 1153, 1201, 1433, 1499, 1723, 1823, 2063, 2341, 2897, 3001, 3259, 3733, 4133, 4397, 4549, 4759, 4933, 6217, 6311, 6353, 6653, 6841, 8101, 8221, 8377, 8513, 8747, 9293, 9973, 10433, 10559
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OFFSET
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1,1
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LINKS
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EXAMPLE
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The 3rd pair of twin primes is twin(3) = (11,13), so a(3) = p(11) = 31.
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MATHEMATICA
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Prime/@Select[Partition[Prime[Range[300]], 2, 1], #[[2]]-#[[1]]==2&][[;; , 1]] (* Harvey P. Dale, May 21 2023 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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