A277775 Decimal expansion of the prime triples constant, also known as Brun's constant B_{3b} = Sum (1/p + 1/(p+4) + 1/(p+6)) as p runs through the initial members of prime triples A022005.

8, 3, 7, 1, 1, 3, 2, 1, 2, 4, 1, 1

Offset

0,1

References

Steven R. Finch, Mathematical Constants, Encyclopedia of Mathematics and its Applications, vol. 94, Cambridge University Press, 2003, Section 2.14, p. 133.

Links

Table of n, a(n) for n=0..11.

Thomas R. Nicely, Prime Constellations Research Project (Mar 16 2010).

Example

0.837113212411...

Crossrefs

Cf. A022005, A065421, A194098, A213007, A277774.

Sequence in context: A316166 A307106 A372857 * A199719 A301813 A206161

Adjacent sequences: A277772 A277773 A277774 * A277776 A277777 A277778

Keyword

nonn,cons,hard,more

Author

Martin Renner, Oct 29 2016

Extensions

Offset corrected by Rick L. Shepherd, Nov 03 2016

Status

approved