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 A129789 #10 Sep 08 2022 08:45:30 %S A129789 5,13,42,157,625,2605,11161,48829,217014,976563,4438921,20345053, %T A129789 93900241,435965402,2034505209,9536743165,44878791361,211927625869, %U A129789 1003867701481,4768371582032,22706531343006,108372081409802 %N A129789 a(n) = ceiling(5^n/n). %H A129789 Vincenzo Librandi, <a href="/A129789/b129789.txt">Table of n, a(n) for n = 1..1000</a> %o A129789 (Magma) [Ceiling(5^n/n):n in [1..30]]; // _Vincenzo Librandi_, Oct 03 2011 %Y A129789 Cf. A053638. %K A129789 nonn,easy %O A129789 1,1 %A A129789 _Mohammad K. Azarian_, May 18 2007