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 A018013 #11 Sep 08 2022 08:44:44
%S A018013 1,2,6,13,31,72,169,397,934,2197,5166,12147,28561,67156,157907,371293,
%T A018013 873034,2052795,4826809,11349443,26686340,62748517,147542765,
%U A018013 346922420,815730721,1918055940,4509991465,10604499373,24934727222,58629889045
%N A018013 Powers of cube root of 13 rounded to nearest integer.
%H A018013 Vincenzo Librandi, <a href="/A018013/b018013.txt">Table of n, a(n) for n = 0..200</a>
%t A018013 Table[Round[13^(n/3)], {n, 0, 40}] (* _Vincenzo Librandi_, Jan 08 2014 *)
%o A018013 (Magma) [Round(13^(n/3)): n in [0..40]]; // _Vincenzo Librandi_, Jan 08 2014
%Y A018013 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), A018004 (k=10), A018007 (k=11), A018010 (k=12), this sequence (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 A018013 nonn
%O A018013 0,2
%A A018013 _N. J. A. Sloane_
%E A018013 More terms from _Vincenzo Librandi_, Jan 08 2014