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 A083639 #19 Feb 16 2025 08:32:49
%S A083639 213245,222299,222300,493647,511304,564317,730833,747413,1067285,
%T A083639 1096077,1361157,2116963,2272190,2356344,2418533,2418534,2540169,
%U A083639 2960664,3019042,3019043,3129868,3147134,3147135,3186070,3206838,3604524,3604525,3731764,3754082,3908785
%N A083639 Starting positions of strings of five 8's in the decimal expansion of Pi.
%C A083639 Positions counted from and after the decimal point. - _Harvey P. Dale_, May 08 2023
%H A083639 Dave Andersen, <a href="http://www.angio.net/pi/piquery">Pi-Search Page</a>
%H A083639 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PiDigits.html">Pi Digits.</a>
%H A083639 <a href="/index/Ph#Pi314">Index entries for sequences related to the number Pi</a>
%t A083639 SequencePosition[RealDigits[Pi,10,4*10^6][[1]],{8,8,8,8,8}][[;;,1]]-1 (* _Harvey P. Dale_, May 08 2023 *)
%Y A083639 Cf. A083638 (four 8's), A083640 (six 8's).
%K A083639 nonn,base
%O A083639 1,1
%A A083639 _Rick L. Shepherd_, May 05 2003
%E A083639 More terms from _Jinyuan Wang_, Mar 01 2020