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Search: id:A153378
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| A153378 |
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Smaller of two consecutive prime numbers such that p1*p2*d-d=average of twin prime pairs, d (delta)=p2-p1. |
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+0
13
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| 1187, 8893, 13967, 31817, 33107, 56009, 57587, 66587, 85837, 87797, 90547, 91199, 93497, 101293, 103177, 111667, 113117, 127447, 141397, 142873, 150343, 150407, 151667, 152617, 156817, 157127, 161977, 176819, 179737, 186007, 205957, 209401
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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1187*1193*6-6=8496540+-1=primes,...
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MATHEMATICA
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lst={}; Do[p1=Prime[n]; p2=Prime[n+1]; d=p2-p1; a=p1*p2*d-d; If[PrimeQ[a-1]&&PrimeQ[a+1], AppendTo[lst, p1]], {n, 8!}]; lst
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CROSSREFS
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Cf. A099349, A153374, A153375, A153376, A153377
Sequence in context: A033912 A027485 A052236 this_sequence A158735 A035860 A040104
Adjacent sequences: A153375 A153376 A153377 this_sequence A153379 A153380 A153381
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KEYWORD
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nonn
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), Dec 24 2008
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