This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A083608 #25 Feb 16 2025 08:32:49
%S A083608 65260,327074,580735,619398,644011,720510,963024,963025,993919,
%T A083608 1078372,1196183,1303184,1347014,1391134,1580648,1592452,1636486,
%U A083608 1637080,1637081,1795773,1795774,1921819,1964004,1991262,2162262,2355086,2492921,2523356,2523357,2915313
%N A083608 Starting positions of strings of five 2's in the decimal expansion of Pi.
%C A083608 Starting position counted after decimal point.- _Harvey P. Dale_, Mar 11 2023
%H A083608 Dave Andersen, <a href="http://www.angio.net/pi/piquery">Pi-Search Page</a>
%H A083608 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PiDigits.html">Pi Digits.</a>
%H A083608 <a href="/index/Ph#Pi314">Index entries for sequences related to the number Pi</a>
%t A083608 Transpose[StringPosition[StringDrop[ToString[N[Pi,10! ]],2],"22222"]][[1]] (* _Vladimir Joseph Stephan Orlovsky_, Jun 19 2009 *)
%t A083608 SequencePosition[RealDigits[Pi,10,3 10^6][[1]],{2,2,2,2,2}][[;;,1]]-1 (* _Harvey P. Dale_, Mar 11 2023 *)
%Y A083608 Cf. A083607 (four 2's), A083609 (six 2's).
%K A083608 nonn,base
%O A083608 1,1
%A A083608 _Rick L. Shepherd_, May 01 2003
%E A083608 More terms from _Jinyuan Wang_, Feb 29 2020