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 A018044 #13 Sep 08 2022 08:44:44
%S A018044 1,3,9,23,66,187,529,1505,4279,12167,34602,98402,279841,795831,
%T A018044 2263237,6436343,18304104,52054436,148035889,420994377,1197252007,
%U A018044 3404825447,9682870661,27536796143,78310985281,222706025201,633346311282,1801152661463,5122238579607
%N A018044 Powers of cube root of 23 rounded up.
%H A018044 Vincenzo Librandi, <a href="/A018044/b018044.txt">Table of n, a(n) for n = 0..200</a>
%t A018044 Ceiling[23^(1/3)^Range[0,30]] (* _Harvey P. Dale_, Apr 24 2012 *)
%t A018044 Table[Ceiling[23^(n/3)], {n, 0, 40}] (* _Vincenzo Librandi_, Jan 10 2014 *)
%o A018044 (Magma) [Ceiling(23^(n/3)): n in [0..40]]; // _Vincenzo Librandi_, Jan 10 2014
%Y A018044 Cf. powers of cube root of k ceiling up: A017981 (k=2), A017984 (k=3), A017987 (k=4), A017990 (k=5), A017993 (k=6), A017996 (k=7), A018002 (k=9), A018005 (k=10), A018008 (k=11), A018011 (k=12), A018014 (k=13), A018017 (k=14), A018020 (k=15), A018023 (k=16), A018026 (k=17), A018029 (k=18), A018032 (k=19), A018035 (k=20), A018038 (k=21), A018041 (k=22), this sequence (k=23), A018047 (k=24).
%K A018044 nonn
%O A018044 0,2
%A A018044 _N. J. A. Sloane_
%E A018044 More terms from _Vincenzo Librandi_, Jan 10 2014