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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, 46970519777308 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

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

a(16) > 50*10^12, a(17) = 28642224609576. - Dmitry Petukhov, Oct 30 2021

LINKS

Table of n, a(n) for n=1..15.

Dave Andersen, Pi-Search Page

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

Timothy Mullican, 50 trillion digits of pi

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

EXAMPLE

See A084144 for an example.

CROSSREFS

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

KEYWORD

nonn,base,more

AUTHOR

Harvey P. Dale

EXTENSIONS

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

a(15) from Dmitry Petukhov, Oct 30 2021

STATUS

approved

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Last modified October 6 21:32 EDT 2022. Contains 357270 sequences. (Running on oeis4.)