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 A172419 #14 Mar 10 2020 10:25:27
%S A172419 32,64,128,243,256,512,729,1024,1458,1536,1728,1944,2048,2187,2304,
%T A172419 2592,2916,3072,3125,3456,3888,4096,4374,4608,5184,5832,6144,6561,
%U A172419 6912,7776,8192,8748,9216,10240,10368,11664,12288,12500,12800,13122,13824,15552
%N A172419 Numbers k that have measure of smoothness J larger than 4, where J = log(k)/log(rad(k)) and rad(k) is the product of the distinct prime divisors of k (A007947).
%C A172419 Subsequence of A049094 and A172418.
%H A172419 Amiram Eldar, <a href="/A172419/b172419.txt">Table of n, a(n) for n = 1..10000</a>
%t A172419 aa = {}; Do[kk = FactorInteger[c]; nn = 1; Do[nn = nn*kk[[n]][[1]], {n, 1, Length[kk]}]; If[Log[c]/Log[nn] > 4, AppendTo[aa, c]], {c, 2, 10000}]; aa
%Y A172419 Cf. A007947, A049094, A172418, A172420, A172421, A172422.
%K A172419 nonn
%O A172419 1,1
%A A172419 _Artur Jasinski_, Feb 02 2010