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 A115693 #15 Feb 24 2024 11:04:35
%S A115693 1,8,72,100,343,800,1000,1331,7200,8000,10000,34300,72000,80000,
%T A115693 100000,133100,343000,720000,800000,1000000,1030301,1331000,1367631,
%U A115693 3430000,7200000,8000000,10000000,13310000,34300000,72000000,80000000,100000000,103030100,133100000
%N A115693 Powerful(1) numbers (A001694) whose digit reversal is a cube.
%H A115693 Amiram Eldar, <a href="/A115693/b115693.txt">Table of n, a(n) for n = 1..180</a>
%H A115693 <a href="/index/Pow#powerful">Index entries for sequences related to powerful numbers</a>.
%e A115693 72 = 2^3*3^2 is powerful and 27 = 3^3.
%t A115693 Select[Join[{1},Select[Range[10000000],Min[Transpose[ FactorInteger[#]] [[2]]]>1&]],IntegerQ[Power[FromDigits[Reverse[IntegerDigits[#]]], (3)^-1]]&] (* _Harvey P. Dale_, Sep 18 2011 *)
%Y A115693 Cf. A001694, A115694.
%K A115693 nonn,base
%O A115693 1,2
%A A115693 _Giovanni Resta_, Jan 31 2006
%E A115693 a(28)-a(34) from _Amiram Eldar_, Feb 24 2024