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 A018023 #13 Sep 08 2022 08:44:44
%S A018023 1,3,7,16,41,102,256,646,1626,4096,10322,26008,65536,165141,416128,
%T A018023 1048576,2642246,6658043,16777216,42275936,106528682,268435456,
%U A018023 676414964,1704458901,4294967296,10822639410,27271342416,68719476736,173162230555
%N A018023 Powers of cube root of 16 rounded up.
%H A018023 Vincenzo Librandi, <a href="/A018023/b018023.txt">Table of n, a(n) for n = 0..200</a>
%t A018023 With[{c=16^(1/3)}, Ceiling[c^Range[0, 30]]] (* _Harvey P. Dale_, Oct 09 2012 *)
%t A018023 Table[Ceiling[16^(n/3)], {n, 0, 40}] (* _Vincenzo Librandi_, Jan 09 2014 *)
%o A018023 (Magma) [Ceiling(16^(n/3)): n in [0..40]]; // _Vincenzo Librandi_, Jan 09 2014
%Y A018023 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), this sequence (k=16), A018026 (k=17), A018029 (k=18), A018032 (k=19), A018035 (k=20), A018038 (k=21), A018041 (k=22), A018044 (k=23), A018047 (k=24).
%K A018023 nonn
%O A018023 0,2
%A A018023 _N. J. A. Sloane_
%E A018023 More terms from _Vincenzo Librandi_, Jan 09 2014