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A096756 Index of first occurrence of exactly n consecutive twos in a row in the decimal expansion of Pi. 19

%I

%S 6,135,1735,4902,65260,963024,82599811,175820910,1270311937,

%T 20717271655

%N Index of first occurrence of exactly n consecutive twos in a row in the decimal expansion of Pi.

%C Presently identical to A050281, but it can be expected that the two will eventually differ, namely, as soon as a(n) > a(n+1) and A050281(n) = A050281(n+1).

%C a(10) > 2*10^9, according to the SubIdiom.com search engine. - _M. F. Hasler_, Apr 13 2019

%C a(11) > 99*10^9. - _Giovanni Resta_, Oct 02 2019

%H David G. Andersen, <a href="http://www.angio.net/pi/piquery">The Pi-Search Page</a>.

%H Peter TrĂ¼b, <a href="https://pi2e.ch/blog/2017/03/10/pi-digits-download/">22.4 trillion digits of pi</a>

%e Pi = 3.1415926... has a "run" of exactly one '2' in the 6th place after the decimal point, therefore a(1) = 6.

%Y Cf. A050281, A035117, A096757, A096758, A096759, A096760, A096761, A096762, A096763, A050279.

%K nonn,base,more

%O 1,1

%A _Robert G. Wilson v_, Jul 07 2004

%E a(10) from _Giovanni Resta_, Oct 02 2019

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Last modified October 18 00:03 EDT 2019. Contains 328135 sequences. (Running on oeis4.)