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 A036900 #34 Feb 16 2025 08:32:37
%S A036900 6,12,548,1769,92994,513311,1934715,56891305
%N A036900 Scan decimal expansion of e until all n-digit strings have been seen; a(n) is last string seen.
%C A036900 The digits scanned are {2, 7, 1, 8, 2, 8, ...}, so the initial 2 in 2.71828... is included and counted as the first digit.
%H A036900 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ConstantDigitScanning.html">Constant Digit Scanning</a>
%H A036900 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/eDigits.html">e Digits</a>
%Y A036900 Cf. A001113 (decimal expansion of e).
%Y A036900 Cf. A036904 (number of digits in the decimal expansion of e that must be scanned to get all n-digit number).
%Y A036900 Cf. A088576 (starting position of the first occurrence of n in the decimal expansion of e).
%Y A036900 Cf. A036901, A036902, A036903, A036905, A036906.
%K A036900 nonn,base,more
%O A036900 1,1
%A A036900 _David W. Wilson_ and _Michael Kleber_
%E A036900 a(7) = 1934715 from _Eric W. Weisstein_, Sep 10 2013
%E A036900 a(8) = 56891305 from _Eric W. Weisstein_, Sep 11 2013