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A127369 (n^3+n)*4^n. 1
8, 160, 1920, 17408, 133120, 909312, 5734400, 34078720, 193462272, 1059061760, 5628755968, 29192355840, 148310589440, 740344987648, 3639984783360, 17660905521152, 84696755077120, 402008938905600, 1890610243960832 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

FORMULA

G.f.: 8*x*(1+4*x+16*x^2)/(1-4*x)^4. [R. J. Mathar, Dec 19 2008]

MATHEMATICA

Table[(n^3 + n) 4^n, {n, 20}] (* Vincenzo Librandi Feb 22 2013 *)

PROG

(MAGMA) [(n^3 + n) * 4^n: n in [1..20]]; // Vincenzo Librandi, Feb 22 2013

CROSSREFS

Cf. A128796, A128960, A128985, A129002.

Sequence in context: A114223 A278669 A201030 * A228700 A036909 A221077

Adjacent sequences:  A127366 A127367 A127368 * A127370 A127371 A127372

KEYWORD

nonn,easy

AUTHOR

Mohammad K. Azarian, May 02 2007

STATUS

approved

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Last modified March 7 19:13 EST 2021. Contains 341928 sequences. (Running on oeis4.)