login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A105382 Primes from merging of 9 successive digits in decimal expansion of Zeta(2) or (Pi^2)/6. 2

%I #13 Mar 09 2023 02:08:53

%S 643647241,738336289,879351029,633086627,276831733,214005479,

%T 968115587,155879489,327776191,564558769,145250683,276587939,

%U 929588063,320447219,782638903,515912081,487745879,894087011,710693161,693161461,448359091

%N Primes from merging of 9 successive digits in decimal expansion of Zeta(2) or (Pi^2)/6.

%H Vincenzo Librandi, <a href="/A105382/b105382.txt">Table of n, a(n) for n = 1..1000</a>

%H The first <a href="http://www.worldwideschool.org/library/books/sci/math/MiscellaneousMathematicalConstants/chap96.html">10,000 digits of Zeta(2)</a> as calculated by _Simon Plouffe_ at WorldWideSchool.org.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/RiemannZetaFunction.html">Riemann Zeta Functions</a>.

%t Select[FromDigits /@ Partition[RealDigits[Zeta[2], 10, 31700][[1]], 9, 1], # > 99999999 && PrimeQ[#] &] (* _Vincenzo Librandi_, Apr 28 2013 *)

%Y Cf. A013661.

%K nonn,base

%O 1,1

%A Andrew G. West (WestA(AT)wlu.edu), Apr 03 2005

%E Changed offset from 0 to 1 by _Vincenzo Librandi_, Apr 28 2013

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)