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A083608 Starting positions of strings of five 2's in the decimal expansion of Pi. 2

%I #24 Mar 11 2023 17:06:47

%S 65260,327074,580735,619398,644011,720510,963024,963025,993919,

%T 1078372,1196183,1303184,1347014,1391134,1580648,1592452,1636486,

%U 1637080,1637081,1795773,1795774,1921819,1964004,1991262,2162262,2355086,2492921,2523356,2523357,2915313

%N Starting positions of strings of five 2's in the decimal expansion of Pi.

%C Starting position counted after decimal point.- _Harvey P. Dale_, Mar 11 2023

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

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/PiDigits.html">Pi Digits.</a>

%H <a href="/index/Ph#Pi314">Index entries for sequences related to the number Pi</a>

%t Transpose[StringPosition[StringDrop[ToString[N[Pi,10! ]],2],"22222"]][[1]] (* _Vladimir Joseph Stephan Orlovsky_, Jun 19 2009 *)

%t SequencePosition[RealDigits[Pi,10,3 10^6][[1]],{2,2,2,2,2}][[;;,1]]-1 (* _Harvey P. Dale_, Mar 11 2023 *)

%Y Cf. A083607 (four 2's), A083609 (six 2's).

%K nonn,base

%O 1,1

%A _Rick L. Shepherd_, May 01 2003

%E More terms from _Jinyuan Wang_, Feb 29 2020

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Last modified March 29 07:27 EDT 2024. Contains 371265 sequences. (Running on oeis4.)