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 A033835 #15 Dec 11 2021 04:34:49 %S A033835 2,5,17,0,33,66,386,258,513,1026,0,16388,57345,16389,196610,262149,0, %T A033835 786438,3145733,6291461,0,29360132,0,67108871,234881030,201326601, %U A033835 1207959557,2415919109,3758096387,5368709130,10737418245,30064771083 %N A033835 Smallest number > 1 equal to sum of n-th powers of its base-3 digits, or 0 if no such number exists (written in base 10). %H A033835 Joseph Myers, <a href="/A033835/b033835.txt">Table of n, a(n) for n = 1..3158</a> %Y A033835 Cf. A162216, A162217, A162218. In other bases: A033836 (base 4), A033837 (base 5), A033838 (base 6), A033839 (base 7), A033840 (base 8), A033841 (base 9), A003321 (base 10). - _Joseph Myers_, Jul 07 2009 %K A033835 nonn,base %O A033835 1,1 %A A033835 _David W. Wilson_