A074042 Numerator of Sum{1/A077800(k)|1<=k<=n}, denominator=A074043.

1, 8, 11, 92, 1117, 15676, 281507, 5603888, 167362597, 5328886012, 222844337147, 9761066934176, 583589647901149, 36052483750271224, 2587390775195626139, 190843701043052923832, 19418598540473717052037

Offset

1,2

Comments

a(n)/A074043(n) -> Brun's constant (A065421).

Links

Table of n, a(n) for n=1..17.

Crossrefs

Sequence in context: A289287 A006072 A196173 * A140478 A111021 A126814

Adjacent sequences: A074039 A074040 A074041 * A074043 A074044 A074045

Keyword

nonn,frac

Author

Reinhard Zumkeller, Aug 13 2002

Extensions

Definition corrected by Max Alekseyev, May 10 2009

Status

approved