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



(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A049523 Smallest starting index for a run of exactly n consecutive equal digits in decimal expansion of Pi. 15
1, 25, 154, 1590, 17535, 763, 710101, 22931746, 24658602, 386980413, 15647738229, 368299898267, 2164164669333, 5758910552710 (list; graph; refs; listen; history; text; internal format)



Digits 3,1,4,1,5,... are indexed 1,2,3,4,5,...

a(11) > 2*10^9. - M. F. Hasler, Mar 22 2017

a(12) > 99*10^9. - Giovanni Resta, Oct 02 2019

a(15) > 12*10^12. - Dmitry Petukhov, Dec 30 2019


Table of n, a(n) for n=1..14.

Dave Andersen, Pi-Search Page

Yasumasa Kanada, Statistical Distribution Information, Home page, Computer Centre, The University of Tokyo.

PI-world Site, The digits and Statistics for 12 trillion digits of PI [archived page]

James Taylor, Irrational Number Search Engine

Peter TrĂ¼b, 22.4 trillion digits of pi

Eric Weisstein's World of Mathematics, Pi Digits.

Index entries for sequences related to the number Pi


See A084144 for an example.


Cf. A049514, A049515, A049516, A049517, A049518, A049519, A049520, A049521, A049522.

Cf. A084144 (digit with this starting index).

Sequence in context: A031211 A049522 A084073 * A232000 A260046 A316948

Adjacent sequences:  A049520 A049521 A049522 * A049524 A049525 A049526




Harvey P. Dale


More terms from Rick L. Shepherd, May 15 2003

Edited and a(10) (via Taylor's search engine) added by M. F. Hasler, Mar 21 2017

a(11) from Giovanni Resta, Oct 02 2019

a(12)-a(14) added by Dmitry Petukhov, Dec 30 2019



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 August 6 00:46 EDT 2021. Contains 346493 sequences. (Running on oeis4.)