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 A054650 #20 Sep 08 2022 08:45:01
%S A054650 1,1,1,2,3,5,9,16,28,51,93,171,315,585,1092,2048,3855,7282,13797,
%T A054650 26214,49932,95325,182361,349525,671089,1290555,2485513,4793490,
%U A054650 9256395,17895697,34636833,67108864,130150524,252645135,490853405,954437177,1857283155,3616814565
%N A054650 Nearest integer to 2^(n-1)/n.
%H A054650 Vincenzo Librandi, <a href="/A054650/b054650.txt">Table of n, a(n) for n = 1..1000</a>
%F A054650 a(n) = round(hypergeometric([-n/2+1/2, -n/2+1], [3/2], 1)). - _Peter Luschny_, Sep 18 2014
%t A054650 Table[Floor[2^(n-1)/n + 1/2], {n,40}] (* _Harvey P. Dale_, Jul 20 2011 *)
%o A054650 (Magma) [Floor(2^(n-1)/n + 1/2): n in [1..45]]; // _Vincenzo Librandi_, Jul 21 2011
%Y A054650 Cf. A006788, A000048.
%K A054650 nonn,easy
%O A054650 1,4
%A A054650 _N. J. A. Sloane_, Apr 17 2000