A091483 a(n) = (4*n)^n.
1, 4, 64, 1728, 65536, 3200000, 191102976, 13492928512, 1099511627776, 101559956668416, 10485760000000000, 1196683881290399744, 149587343098087735296, 20325604337285010030592, 2982856619293778479415296, 470184984576000000000000000
Offset: 0
Keywords
Links
- Vincenzo Librandi, Table of n, a(n) for n = 0..100
Programs
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Magma
[(4*n)^n: n in [0..20]]; // Vincenzo Librandi, Feb 24 2014
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Mathematica
Join[{1},Table[(4n)^n,{n,20}]] (* Harvey P. Dale, Feb 11 2024 *) -
PARI
a(n) = (4*n)^n; \\ Joerg Arndt, Feb 23 2014
Formula
E.g.f.: 1/(1 + LambertW(-4*x)). - Ilya Gutkovskiy, Oct 03 2017
Extensions
More terms from Vincenzo Librandi, Feb 24 2014