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

1,1

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

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

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.

Sequence in context: A070067 A027502 A050285 * A178791 A299429 A297308

Adjacent sequences: A096757 A096758 A096759 * A096761 A096762 A096763

Keyword

nonn,base,more

Author

Robert G. Wilson v, Jul 07 2004

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

Status

approved