A127555 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).

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

Offset

1,1

Links

Table of n, a(n) for n=1..100.

Mathematica

a = {}; Do[If[PrimeQ[Prime[n] + 2], AppendTo[a, Prime[n] + 1]], {n, 2, 500}]; RealDigits[N[FromContinuedFraction[a], 100]][[1]]

Crossrefs

Cf. A064442, A127549, A127550, A127551, A127552, A127553, A127556, A127557, A127558, A127559.

Sequence in context: A349238 A249074 A021710 * A192085 A117001 A206787

Adjacent sequences: A127552 A127553 A127554 * A127556 A127557 A127558

Keyword

cons,nonn

Author

Artur Jasinski, Jan 18 2007

Status

approved