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 A105116 #17 Oct 20 2023 06:47:36 %S A105116 0,1,2,10,11,12,20,21,100,101,102,110,111,120,121,200,201,202,210,211, %T A105116 212,1000,1001,1010,1011,1012,1020,1021,1100,1101,1102,1110,1111,1120, %U A105116 1121,1200,1201,1202,1210,1211,1212,2000,2001,2010,2011,2012,2020 %N A105116 The part of n left of the decimal point when written in base e using a greedy algorithm representation. %H A105116 Paolo Xausa, <a href="/A105116/b105116.txt">Table of n, a(n) for n = 0..10000</a> %e A105116 3 in base e = 10.020... so a(3) = 10. %t A105116 A105116[n_]:=FromDigits[First[RealDigits[n,E,Floor[Log[E,Max[n,1]]]+1]]]; %t A105116 Array[A105116,100,0] (* _Paolo Xausa_, Oct 18 2023 *) %Y A105116 Cf. A001113 (e digits). %Y A105116 Cf. A105424 (base phi), A344939 (base Pi). %Y A105116 Cf. A363832 (number of digits). %K A105116 nonn,base %O A105116 0,3 %A A105116 Bryan Jacobs (bryanjj(AT)gmail.com), Apr 08 2005