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Search: id:A141594
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| A141594 |
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q=9699690. Numbers n and n+q*1,n+q*2,n+q*3,n+q*4,n+q*5 are averages of twin primes. |
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| 6341442, 6837222, 11285508, 15315720, 174710022, 326603400, 434021520, 508246812, 711829818
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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6341442 and 6341442+q*1,6341442+q*2,6341442+q*3,6341442+q*4,6341442+q*5 are averages of twin primes.
q = 2*3*5*7*11*13*17*19 = 9699690.
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MATHEMATICA
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q=9699690; lst={}; Do[If[PrimeQ[n-1]&&PrimeQ[n+1]&&PrimeQ[n+q*1-1]&&PrimeQ[n+q*1+1]&&PrimeQ[n+q*2-1]&&PrimeQ[n+q*2+1]&&PrimeQ[n+q*3-1]&&PrimeQ[n+q*3+1]&&PrimeQ[n+q*4-1]&&PrimeQ[n+q*4+1]&&PrimeQ[n+q*5-1]&&PrimeQ[n+q*5+1], Print[n]; AppendTo[lst, n]], {n, 10^6, 10^9}]; lst
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CROSSREFS
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Sequence in context: A137772 A138941 A018895 this_sequence A115615 A022237 A116173
Adjacent sequences: A141591 A141592 A141593 this_sequence A141595 A141596 A141597
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KEYWORD
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nonn,uned
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), Aug 20 2008
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