A277774 Decimal expansion of the prime triples constant, also known as Brun's constant B_{3a} = Sum (1/p + 1/(p+2) + 1/(p+6)) as p runs through the initial members of prime triples A022004.
1, 0, 9, 7, 8, 5, 1, 0, 3, 9, 6, 7, 9
Offset: 1
Examples
1.097851039679...
References
- Steven R. Finch, Mathematical Constants, Encyclopedia of Mathematics and its Applications, vol. 94, Cambridge University Press, 2003, Section 2.14, p. 133.
Links
- Thomas R. Nicely, Prime Constellations Research Project (Mar 16 2010).
Extensions
Offset corrected by Rick L. Shepherd, Nov 03 2016