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 A083627 #15 Feb 16 2025 08:32:49
%S A083627 48439,102387,140744,250129,252499,252500,309379,363995,375601,450347,
%T A083627 483202,595298,722275,850138,964604,1109283,1268703,1367754,1373818,
%U A083627 1381298,1676919,1717341,1819654,1901872,1924024,2088622,2162433
%N A083627 Starting positions of strings of five 6's in the decimal expansion of Pi.
%H A083627 <a href="/index/Ph#Pi314">Index entries for sequences related to the number Pi</a>
%H A083627 Dave Andersen, <a href="http://www.angio.net/pi/piquery">Pi-Search Page</a>
%H A083627 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PiDigits.html">Pi Digits.</a>
%t A083627 SequencePosition[RealDigits[Pi,10,2163000][[1]],{6,6,6,6,6}][[All,1]]-1 (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Jan 12 2019 *)
%Y A083627 Cf. A083626 (four 6's), A083628 (six 6's).
%K A083627 base,nonn
%O A083627 1,1
%A A083627 _Rick L. Shepherd_, May 03 2003