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Search: id:A127555
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| A127555 |
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Decimal expansion of the number 4.164393920313549053413239828743... having continued fraction expansion 4, 6, 12, 18, 30, 42, 60, 72, 102, ... (averages of twin primes A014574). |
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+0
9
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| 4, 1, 6, 4, 3, 9, 3, 9, 2, 0, 3, 1, 3, 5, 4, 9, 0, 5, 3, 4, 1, 3, 2, 3, 9, 8, 2, 8, 7, 4, 3, 1, 2, 1, 9, 7, 4, 1, 3, 3, 3, 3, 6, 9, 1, 9, 2, 6, 2, 3, 0, 1, 1, 8, 9, 1, 9, 7, 6, 3, 6, 7, 6, 9, 0, 2, 6, 4, 9, 3, 0, 8, 8, 6, 1, 7, 5, 2, 8, 7, 1, 9, 2, 4, 2, 9, 6, 3, 1, 1, 3, 8, 9, 4, 6, 3, 6, 6, 6, 3
(list; cons; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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a = {}; Do[If[PrimeQ[Prime[n] + 2], AppendTo[a, Prime[n] + 1]], {n, 2, 500}]; RealDigits[N[FromContinuedFraction[a], 100]][[1]]
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CROSSREFS
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Cf. A064442, A127549, A127550, A127551, A127552, A127553, A127556, A127557, A127558, A127559.
Sequence in context: A127556 A050307 A021710 this_sequence A117001 A098986 A000593
Adjacent sequences: A127552 A127553 A127554 this_sequence A127556 A127557 A127558
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KEYWORD
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cons,nonn
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AUTHOR
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Artur Jasinski (grafix(AT)csl.pl), Jan 18 2007
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