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 A002138 #13 Oct 14 2023 23:43:14
%S A002138 0,1,46,927,6904,52651,65664,946711,441262,144135,1,1651771,4895892,
%T A002138 9086284,6359257,52609311,61277761,96573142,42221043,18854074,46,
%U A002138 12166758,409973311,988530841,679201191,526041442,677519803,984024783,403098184,123328495,927
%N A002138 6th powers written backwards.
%H A002138 Alois P. Heinz, <a href="/A002138/b002138.txt">Table of n, a(n) for n = 0..10000</a>
%p A002138 a:= n-> (s-> parse(cat(s[-i]$i=1..length(s))))(""||(n^6)):
%p A002138 seq(a(n), n=0..50); # _Alois P. Heinz_, Apr 09 2015
%K A002138 nonn,base,look
%O A002138 0,3
%A A002138 _N. J. A. Sloane_