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Round((3*n+1/n)^n)
1

%I #6 Sep 08 2022 08:45:59

%S 4,42,813,22519,811368,35946076,1888624972,114746269758,7912720985079,

%T 610470884770406,52094956940751710,4871691779130290166,

%U 495409898474358881327,54427906182810588386674,6424384909407981686846705

%N Round((3*n+1/n)^n)

%H Vincenzo Librandi, <a href="/A197976/b197976.txt">Table of n, a(n) for n = 1..300</a>

%o (Magma) [Round((3*n+1/n)^n): n in [1..20]]

%Y Cf. A014056

%K nonn

%O 1,1

%A _Vincenzo Librandi_, Oct 20 2011