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 A091483 #17 Feb 11 2024 17:33:30
%S A091483 1,4,64,1728,65536,3200000,191102976,13492928512,1099511627776,
%T A091483 101559956668416,10485760000000000,1196683881290399744,
%U A091483 149587343098087735296,20325604337285010030592,2982856619293778479415296,470184984576000000000000000
%N A091483 a(n) = (4*n)^n.
%H A091483 Vincenzo Librandi, <a href="/A091483/b091483.txt">Table of n, a(n) for n = 0..100</a>
%F A091483 E.g.f.: 1/(1 + LambertW(-4*x)). - _Ilya Gutkovskiy_, Oct 03 2017
%t A091483 Join[{1},Table[(4n)^n,{n,20}]] (* _Harvey P. Dale_, Feb 11 2024 *)
%o A091483 (PARI) a(n) = (4*n)^n; \\ _Joerg Arndt_, Feb 23 2014
%o A091483 (Magma) [(4*n)^n: n in [0..20]]; // _Vincenzo Librandi_, Feb 24 2014
%Y A091483 Cf. A062971, A091482.
%K A091483 nonn
%O A091483 0,2
%A A091483 _Christian G. Bower_, Jan 13 2004
%E A091483 More terms from _Vincenzo Librandi_, Feb 24 2014