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 A004595 #20 Mar 26 2018 19:55:17 %S A004595 2,2,3,1,3,3,2,0,1,1,1,0,1,1,2,0,2,2,0,2,2,3,2,3,1,0,2,2,2,1,2,2,2,2, %T A004595 3,3,3,1,3,0,1,1,1,2,0,2,0,0,0,2,1,3,0,3,3,1,0,3,3,0,3,3,0,1,3,1,2,0, %U A004595 2,3,2,1,3,0,1,1,2,0,0,3,3,0,3,2,0,2,3,1,0,3,1,2,2,1,1,1,2,2,2 %N A004595 Expansion of e in base 4. %H A004595 G. C. Greubel, <a href="/A004595/b004595.txt">Table of n, a(n) for n = 1..10000</a> %t A004595 RealDigits[E,4,120][[1]] (* _Harvey P. Dale_, Nov 06 2011 *) %Y A004595 Expansion of e in base b: A004593 (b=2), A004594 (b=3), this sequence (b=4), A004596 (b=5), A004597 (b=6), A004598 (b=7), A004599 (b=8), A004600 (b=9), A001113 (b=10), A170873 (b=16). - _Jason Kimberley_, Dec 05 2012 %K A004595 nonn,base,cons %O A004595 1,1 %A A004595 _N. J. A. Sloane_