A096757 Index of first occurrence of exactly n consecutive threes in a row in the decimal expansion of Pi.

9, 24, 1698, 66846, 28467, 1129019, 710100, 36488176, 2011485307, 4663739959, 60422218263, 1379574176590, 26258139334603

Offset

1,1

Comments

Differs from A050282 as soon as a(4) > a(5), while A050282(4) = A050282(5) = a(5). - M. F. Hasler, Apr 13 2019

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

a(13) > 22*10^12. - Dmitry Petukhov, Jan 26 2020

a(14) > 50*10^12. - Dmitry Petukhov, Oct 28 2021

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

Crossrefs

Cf. A050282 (same for at least three 3s); A050279, A035117, A096756, A096758, A096759, A096760, A096761, A096762, A096763 (analog for digits 0, 1, 2, 4, ...).

Sequence in context: A121089 A362697 A050282 * A101158 A113496 A343670

Adjacent sequences: A096754 A096755 A096756 * A096758 A096759 A096760

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 26 2020

a(13) from Dmitry Petukhov, Oct 28 2021

Status

approved