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Search: id:A127558
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| A127558 |
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Decimal expansion of the number 29.000694926917980144237135814... having continued fraction expansion 29, 1439, 4211, 7703, 12907, 14957, ... (A126555). |
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+0
6
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| 2, 9, 0, 0, 0, 6, 9, 4, 9, 2, 6, 9, 1, 7, 9, 8, 0, 1, 4, 4, 2, 3, 7, 1, 3, 5, 8, 1, 4, 0, 8, 7, 8, 4, 9, 1, 2, 0, 4, 8, 7, 4, 8, 2, 8, 7, 5, 9, 7, 5, 7, 3, 4, 7, 7, 9, 8, 4, 2, 5, 9, 3, 4, 4, 6, 1, 5, 1, 6, 0, 6, 4, 5, 0, 8, 6, 1, 3, 6, 3, 8, 3, 5, 5, 3, 0, 0, 3, 0, 9, 5, 0, 0, 9, 6, 7, 2, 9, 5, 6
(list; cons; graph; listen)
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OFFSET
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2,1
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MATHEMATICA
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b = {}; a = {}; Do[If[PrimeQ[((Prime[n + 2] + Prime[n + 1])/2 + (Prime[n + 1] + Prime[n])/2)/2], AppendTo[a, ((Prime[n + 2] + Prime[n + 1])/2 + (Prime[n + 1] + Prime[n])/2)/2]], {n, 1, 100000}]; Do[If[PrimeQ[(a[[k + 1]] + a[[k]])/2], AppendTo[b, (a[[k + 1]] + a[[k]])/2]], {k, 1, Length[a] - 1}]; RealDigits[N[FromContinuedFraction[b], 100]][[1]]
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CROSSREFS
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Cf. A064442, A127549, A127550, A127551, A127552, A127553, A127555, A127556, A127557, A127559, A126555.
Sequence in context: A012667 A124075 A019315 this_sequence A011063 A021779 A019969
Adjacent sequences: A127555 A127556 A127557 this_sequence A127559 A127560 A127561
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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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EXTENSIONS
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Offset corrected by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 05 2009
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