A096760 a(n) is the starting position of the first occurrence of a string of exactly n 6's in the decimal expansion of Pi.

7, 117, 2440, 21880, 48439, 252499, 8209165, 55616210, 45681781, 386980412, 32104158792, 1221587715177, 81111117323616

Offset: 1

Author

Robert G. Wilson v, Jul 07 2004

Keywords

• nonn
• base
• more

Comments

Differs from A050285 at a(8) > a(9) = A050285(9) = A050285(8). - M. F. Hasler, Apr 13 2019

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

a(13) > 22*10^12. - Dmitry Petukhov, Jan 29 2020

a(13)-a(16) > 5*10^13, a(17) = 28642224609576. - Dmitry Petukhov, Oct 30 2021

a(14)-a(16) > 10^14. - Dmitry Petukhov, Sep 19 2022

Links

• David G. Andersen, The Pi-Search Page.
• Timothy Mullican, 50 trillion digits of pi
• Peter Trüb, 22.4 trillion digits of pi
• Eric Weisstein's World of Mathematics, Pi Digits

Crossrefs

Cf. A050285, A035117, A096756, A096757, A096758, A096759, A096761, A096762, A096763, A050279.

Extensions

a(11) from Giovanni Resta, Oct 02 2019

a(12) from Dmitry Petukhov, Jan 14 2020

a(13) from Dmitry Petukhov, Sep 19 2022