%I #8 Sep 08 2022 08:45:59

%S 5,72,1876,69729,3363232,199205127,13982257729,1134344816184,

%T 104416147080711,10750872867074586,1224163955433850944,

%U 152733676280699540998,20719969553916698313304,3036565789908881887393114

%N Round((4*n+1/n)^n)

%H Vincenzo Librandi, <a href="/A197977/b197977.txt">Table of n, a(n) for n = 1..300</a>

%t Table[Round[(4n+1/n)^n],{n,20}] (* _Harvey P. Dale_, Aug 20 2013 *)

%o (Magma) [Round((4*n+1/n)^n): n in [1..20]]

%Y Cf. A014056, A197324

%K nonn

%O 1,1

%A _Vincenzo Librandi_, Oct 20 2011