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 A083636 #20 Feb 16 2025 08:32:49 %S A083636 24658601,24658602,82144203,287248607,1096547723,1136093224, %T A083636 1136093225,1199887625,1253506894,1284344221,1284344222,1343455078, %U A083636 1347842020,1387894932,1387894933,1439845247,1577148578 %N A083636 Starting positions of strings of eight 7's in the decimal expansion of Pi. %C A083636 From _M. F. Hasler_, Mar 21 2017: (Start) %C A083636 Positions 0,1,2,... correspond to digits 3,1,4,... as in the search engines and most related sequences, while some sequences, e.g., A049522, use indexing starting at 1. %C A083636 Consecutive numbers indicate that there are more than eight '7's in a row, e.g., at positions 24658601, 1136093224, 1387894932,... start runs of nine '7's. The first of these is also A049522(9)-1 = A049523(9)-1. (End) %H A083636 Dave Andersen, <a href="http://www.angio.net/pi/piquery">Pi-Search Page</a> %H A083636 James Taylor, <a href="http://www.subidiom.com/pi/">Irrational Number Search Engine</a> %H A083636 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PiDigits.html">Pi Digits.</a> %H A083636 <a href="/index/Ph#Pi314">Index entries for sequences related to the number Pi</a> %Y A083636 Cf. A083635 (seven '7's), A083630 (eight '6's). %K A083636 base,nonn %O A083636 1,1 %A A083636 _Rick L. Shepherd_, May 05 2003 %E A083636 Terms beyond a(3) from _M. F. Hasler_, Mar 21 2017