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 A083630 #23 Feb 16 2025 08:32:49 %S A083630 45681781,45681782,55616210,129423072,160301327,320800854,354039866, %T A083630 386980412,386980413,386980414,424213905,424213906,661180039, %U A083630 823960247,864397328,923385691,1064174618,1129615231,1183548825,1208233597,1261092402,1311369257 %N A083630 Starting positions of strings of eight '6's in the decimal expansion of Pi. %C A083630 Digits 3,1,4,... are indexed 0,1,2,... (as in the two search engines and most other related sequences, but not, e.g., in A049522). %H A083630 Dave Andersen, <a href="http://www.angio.net/pi/piquery">Pi-Search Page</a> %H A083630 James Taylor, <a href="http://www.subidiom.com/pi/">Irrational Number Search Engine</a> %H A083630 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PiDigits.html">Pi Digits.</a> %H A083630 <a href="/index/Ph#Pi314">Index entries for sequences related to the number Pi</a> %Y A083630 Cf. A083629 (seven '6's), A083636 (eight '7's). %Y A083630 Cf. A049522, A049523. %K A083630 base,nonn %O A083630 1,1 %A A083630 _Rick L. Shepherd_, May 04 2003 %E A083630 a(4) and a(5) from _Harvey P. Dale_, May 05 2011 %E A083630 More terms, via Taylor's search engine, from _M. F. Hasler_, Mar 21 2017