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 A018004 #11 Sep 08 2022 08:44:44
%S A018004 1,2,5,10,22,46,100,215,464,1000,2154,4642,10000,21544,46416,100000,
%T A018004 215443,464159,1000000,2154435,4641589,10000000,21544347,46415888,
%U A018004 100000000,215443469,464158883,1000000000,2154434690,4641588834,10000000000,21544346900
%N A018004 Powers of cube root of 10 rounded to nearest integer.
%H A018004 Vincenzo Librandi, <a href="/A018004/b018004.txt">Table of n, a(n) for n = 0..200</a>
%t A018004 Table[Round[10^(n/3)], {n, 0, 40}] (* _Vincenzo Librandi_, Jan 08 2014 *)
%o A018004 (Magma) [Round(10^(n/3)): n in [0..50]]; // _Vincenzo Librandi_, Jan 08 2014
%Y A018004 Cf. powers of cube root of k rounded up: A017980 (k=2), A017983 (k=3), A017986 (k=4), A017989 (k=5), A017992 (k=6), A017995 (k=7), A018001 (k=9),this sequence (k=10), A018007 (k=11), A018010 (k=12), A018013 (k=13), A018016 (k=14), A018019 (k=15), A018022 (k=16), A018025 (k=17), A018028 (k=18), A018031 (k=19), A018034 (k=20), A018037 (k=21), A018040 (k=22), A018043 (k=23), A018046 (k=24).
%K A018004 nonn
%O A018004 0,2
%A A018004 _N. J. A. Sloane_
%E A018004 More terms from _Vincenzo Librandi_, Jan 08 2014