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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
1, 0, 9, 7, 8, 5, 1, 0, 3, 9, 6, 7, 9 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..13.

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

EXAMPLE

1.097851039679...

CROSSREFS

Cf. A022004, A065421, A194098, A213007, A277775.

Sequence in context: A081855 A019887 A163931 * A011359 A154827 A258942

Adjacent sequences:  A277771 A277772 A277773 * A277775 A277776 A277777

KEYWORD

nonn,cons,hard,more

AUTHOR

Martin Renner, Oct 29 2016

EXTENSIONS

Offset corrected by Rick L. Shepherd, Nov 03 2016

STATUS

approved

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Last modified May 22 15:54 EDT 2022. Contains 353957 sequences. (Running on oeis4.)