login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A065414 Decimal expansion of rank 2 Artin constant product(1-1/(p^3-p^2), p=prime). 12
6, 9, 7, 5, 0, 1, 3, 5, 8, 4, 9, 6, 3, 6, 5, 9, 0, 3, 2, 8, 4, 6, 7, 0, 3, 5, 0, 8, 2, 0, 9, 2, 2, 9, 2, 4, 0, 7, 3, 1, 5, 3, 9, 4, 6, 2, 1, 4, 5, 1, 5, 3, 9, 5, 3, 5, 4, 3, 7, 8, 7, 5, 2, 8, 8, 6, 4, 5, 9, 1, 1, 0, 5, 9, 6, 0, 9, 5, 5, 6, 6, 6, 6, 6, 1, 5, 4, 8, 3, 8, 5, 1, 3, 0, 7, 1, 8, 7, 9 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..98.

Index entries for sequences related to Artin's conjecture

R. J. Mathar, Hardy-Littlewood constants embedded into infinite products.., arxiv:0903.2514 [math.NT], 2009-2011, variable A_1^(2).

G. Niklasch, Some number theoretical constants: 1000-digit values [Cached copy]

EXAMPLE

0.697501358496365903284670350820922924...

MATHEMATICA

digits = 99; m0 = 1000; dm = 100; Clear[s]; r[n_] := RootSum[-1 - #^2 + #^3 &, #^n&] - 1; s[m_] := s[m] = NSum[-r[n] PrimeZetaP[n]/n, {n, 3, m}, NSumTerms -> m0, WorkingPrecision -> 300] // Exp; s[m0]; s[m = m0 + dm]; While[RealDigits[s[m], 10, digits][[1]] != RealDigits[s[m - dm], 10, digits][[1]], Print[m]; m = m + dm]; RealDigits[s[m], 10, digits][[1]] (* Jean-Fran├žois Alcover, Apr 14 2016 *)

CROSSREFS

Cf. A005596, A065417.

Sequence in context: A145429 A194789 A273082 * A198135 A019813 A096767

Adjacent sequences:  A065411 A065412 A065413 * A065415 A065416 A065417

KEYWORD

cons,nonn

AUTHOR

N. J. A. Sloane, Nov 15 2001

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 30 06:36 EST 2020. Contains 338781 sequences. (Running on oeis4.)