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