|
%I #22 Oct 29 2021 11:38:06
%S 9,24,1698,66846,28467,1129019,710100,36488176,2011485307,4663739959,
%T 60422218263,1379574176590,26258139334603
%N Index of first occurrence of exactly n consecutive threes in a row in the decimal expansion of Pi.
%C Differs from A050282 as soon as a(4) > a(5), while A050282(4) = A050282(5) = a(5). - _M. F. Hasler_, Apr 13 2019
%C a(12) > 99*10^9. - _Giovanni Resta_, Oct 02 2019
%C a(13) > 22*10^12. - _Dmitry Petukhov_, Jan 26 2020
%C a(14) > 50*10^12. - _Dmitry Petukhov_, Oct 28 2021
%H David G. Andersen, <a href="http://www.angio.net/pi/piquery">The Pi-Search Page</a>.
%H Timothy Mullican, <a href="https://storage.googleapis.com/pi50t/index.html">50 trillion digits of pi</a>
%H Peter Trüb, <a href="https://pi2e.ch/blog/2017/03/10/pi-digits-download/">22.4 trillion digits of pi</a>
%Y Cf. A050282 (same for at least three 3s); A050279, A035117, A096756, A096758, A096759, A096760, A096761, A096762, A096763 (analog for digits 0, 1, 2, 4, ...).
%K nonn,base,more
%O 1,1
%A _Robert G. Wilson v_, Jul 07 2004
%E a(11) from _Giovanni Resta_, Oct 02 2019
%E a(12) from _Dmitry Petukhov_, Jan 26 2020
%E a(13) from _Dmitry Petukhov_, Oct 28 2021
|
