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 A053638 #22 Jun 21 2024 11:14:26
%S A053638 2,2,3,4,7,11,19,32,57,103,187,342,631,1171,2185,4096,7711,14564,
%T A053638 27595,52429,99865,190651,364723,699051,1342178,2581111,4971027,
%U A053638 9586981,18512791,35791395,69273667,134217728,260301049,505290271,981706811,1908874354,3714566311,7233629131
%N A053638 a(n) = ceiling(2^n/n).
%H A053638 Vincenzo Librandi, <a href="/A053638/b053638.txt">Table of n, a(n) for n = 1..1000</a>
%F A053638 a(n) = A082482(n) + 1.
%t A053638 Table[Ceiling[2^n/n],{n,1,40}] (* _Vincenzo Librandi_, Dec 19 2011 *)
%o A053638 (Magma) [Ceiling(2^n/n): n in [1..40]]; // _Vincenzo Librandi_, Dec 19 2011
%o A053638 (PARI) a(n)=ceil(2^n/n) \\ _Charles R Greathouse IV_, Apr 17 2012
%o A053638 (Sage) [ceil(2^n/n) for n in (1..40)] # _G. C. Greubel_, May 17 2019
%Y A053638 Cf. A082482, A053637, A053639.
%K A053638 nonn,easy
%O A053638 1,1
%A A053638 _N. J. A. Sloane_, Mar 23 2000