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A091483 a(n) = (4*n)^n. 3
1, 4, 64, 1728, 65536, 3200000, 191102976, 13492928512, 1099511627776, 101559956668416, 10485760000000000, 1196683881290399744, 149587343098087735296, 20325604337285010030592, 2982856619293778479415296, 470184984576000000000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..100

FORMULA

E.g.f.: 1/(1 + LambertW(-4*x)). - Ilya Gutkovskiy, Oct 03 2017

PROG

(PARI) a(n) = (4*n)^n; \\ Joerg Arndt, Feb 23 2014

(MAGMA) [(4*n)^n: n in [0..20]]; // Vincenzo Librandi, Feb 24 2014

CROSSREFS

Cf. A062971, A091482.

Sequence in context: A085532 A146341 A264335 * A263988 A208357 A050636

Adjacent sequences:  A091480 A091481 A091482 * A091484 A091485 A091486

KEYWORD

nonn

AUTHOR

Christian G. Bower, Jan 13 2004

EXTENSIONS

More terms from Vincenzo Librandi, Feb 24 2014

STATUS

approved

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Last modified July 27 05:26 EDT 2021. Contains 346305 sequences. (Running on oeis4.)