A111120 Decimal expansion of sum_{k=1..inf} 1/2^(prime(k)-k).

1, 3, 9, 9, 9, 6, 6, 2, 7, 5, 5, 5, 9, 9, 0, 8, 9, 4, 2, 6, 0, 0, 5, 0, 9, 8, 1, 6, 3, 1, 1, 3, 1, 5, 4, 7, 1, 2, 8, 2, 3, 4, 4, 3, 6, 1, 8, 4, 4, 0, 6, 8, 8, 2, 1, 0, 3, 6, 4, 7, 6, 5, 4, 1, 7, 6, 9, 0, 3, 8, 7, 8, 7, 2, 5, 3, 3, 4, 0, 4, 1, 9, 1, 1, 8, 5, 8, 2, 1, 9, 8, 1, 8, 0, 6, 4, 9, 1, 0, 5, 8, 9, 2, 9, 1

Offset

1,2

Links

Table of n, a(n) for n=1..105.

Example

1.39996627555990894260050981631131547128234436184406882103647654176...

Mathematica

RealDigits[ Sum[1/2^(Prime[k] - k), {k, 87}], 10, 111][[1]] (* Robert G. Wilson v *)

Crossrefs

Cf. A014689.

Sequence in context: A188444 A372914 A201409 * A100401 A004166 A110759

Adjacent sequences: A111117 A111118 A111119 * A111121 A111122 A111123

Keyword

nonn,cons

Author

Yalcin Aktar, Oct 15 2005

Extensions

More terms from Robert G. Wilson v, Oct 17 2005

Status

approved