%I #8 Sep 08 2022 08:45:59
%S 3,20,254,4633,110408,3243618,113177496,4570858599,209655304353,
%T 10763674952098,611433842280388,38071427445729200,2578294348444597267,
%U 188670154792420320214,14834716200104606205407,1247263229999781126495328,111661618863544248806155259
%N Round((2*n+1/n)^n)
%H Vincenzo Librandi, <a href="/A197975/b197975.txt">Table of n, a(n) for n = 1..300</a>
%t Table[Round[(2n+1/n)^n],{n,20}] (* _Harvey P. Dale_, May 28 2018 *)
%o (Magma) [Round((2*n+1/n)^n): n in [1..20]]
%Y Cf. A014056
%K nonn
%O 1,1
%A _Vincenzo Librandi_, Oct 20 2011
%E Corrected and extended by _Harvey P. Dale_, May 28 2018