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A035117 a(n) is the starting position of the first occurrence of a string of at least n 1's in the decimal expansion of Pi. 20
1, 94, 153, 12700, 32788, 255945, 4657555, 159090113, 812432526, 3961184001, 15647738228, 1041032609981, 3907688331257 (list; graph; refs; listen; history; text; internal format)



Presently identical to A096755, which is the first occurrences of exactly n 1's in the digits of Pi. Will differ as soon as there's some a(n) = a(n+1) and equivalently, A035117(n) > A035117(n+1). - M. F. Hasler, Mar 17 2017


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

David G. Andersen, The Pi-Search Page.

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

Eric Weisstein's World of Mathematics, Pi Digits.

Yasumasa Kanada Laboratory Home Page, Computer Centre, The University of Tokyo, Statistical Distribution Information


Cf. A000796 (decimal expansion (or digits) of Pi).

Cf. A035117 (this), A050281 (n '2's), A050282, A050283, A050284, A050286, A050287, A048940 (n '9's).

Cf. A096755 (exactly n '1's), A096756, A096757, A096758, A096759, A096760, A096761, A096762, A096763 (exactly n '9's), A050279 (exactly n '0's).

Cf. A121280 = A068987 - 1 (position of "123...n" in Pi's decimals).

Cf. A176341 (first occurrence of n in Pi's digits).

Sequence in context: A039551 A100767 A050208 * A096755 A050965 A044426

Adjacent sequences:  A035114 A035115 A035116 * A035118 A035119 A035120




Leonardo Bitran (lbitran(AT)reuna.cl)


More terms from Colin Martin (cbmartin(AT)tpg.com.au), Mar 03 2002

Edited by N. J. A. Sloane at the suggestion of Andrew S. Plewe, May 27 2007

Edited, after re-establishing A096755, by M. F. Hasler, Mar 17 2017

a(11) from Giovanni Resta, Sep 30 2019

a(12) from Yasumasa Kanada Laboratory, 2002 and a(13) from Shigeru Kondo, 2011, added by Dmitry Petukhov, Dec 27 2019



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Last modified June 22 21:29 EDT 2021. Contains 345393 sequences. (Running on oeis4.)