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 A197975 #10 Jun 02 2025 05:17:29
%S A197975 3,20,254,4633,110408,3243618,113177496,4570858599,209655304353,
%T A197975 10763674952098,611433842280388,38071427445729200,2578294348444597267,
%U A197975 188670154792420320214,14834716200104606205407,1247263229999781126495328,111661618863544248806155259
%N A197975 Round((2*n+1/n)^n).
%H A197975 Vincenzo Librandi, <a href="/A197975/b197975.txt">Table of n, a(n) for n = 1..300</a>
%t A197975 Table[Round[(2n+1/n)^n],{n,20}] (* _Harvey P. Dale_, May 28 2018 *)
%o A197975 (Magma) [Round((2*n+1/n)^n): n in [1..20]]
%Y A197975 Cf. A014056
%K A197975 nonn
%O A197975 1,1
%A A197975 _Vincenzo Librandi_, Oct 20 2011
%E A197975 Corrected and extended by _Harvey P. Dale_, May 28 2018