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 A036903 #25 Mar 06 2025 19:54:03 %S A036903 32,606,8555,99849,1369564,14118312,166100506,1816743912,22445207406, %T A036903 241641121048,2512258603207 %N A036903 Scan decimal expansion of Pi until all n-digit strings have been seen; a(n) is number of digits that must be scanned. %H A036903 Fabrice Bellard, <a href="http://bellard.org/pi/pi2700e9/pidigits.html">Link to data from Bellard's calculation of 2.7 trillion digits of pi</a> %H A036903 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PiDigits.html">Pi Digits</a> %F A036903 a(n) = A080597(n) - 1. %Y A036903 Cf. A000796 (decimal expansion of Pi). %Y A036903 Cf. A080597 (= a(n) + 1). %Y A036903 Cf. A032445 (starting positions of the first occurrences of n the decimal expansion of Pi). %Y A036903 Cf. A032510 (last n-digit number seen when scanning for all n-digit numbers). %Y A036903 Cf. A036900-A036906. %K A036903 nonn,base,more %O A036903 1,1 %A A036903 _Michael Kleber_ %E A036903 a(8)-a(11) from fabrice(AT)bellard.org (Fabrice Bellard), Oct 23 2011