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A119635 (n^3+n)*2^n. 1
4, 40, 240, 1088, 4160, 14208, 44800, 133120, 377856, 1034240, 2748416, 7127040, 18104320, 45187072, 111083520, 269484032, 646184960, 1533542400, 3606052864, 8409579520, 19465764864, 44753223680, 102257131520, 232330887168 (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.: 4*x*(1 + 2*x + 4*x^2)/(1 - 2*x)^4. - Vincenzo Librandi, Feb 22 2013

MATHEMATICA

Table[(n^3 + n)*2^n, {n, 30}] (* or *) CoefficientList[Series[4 (1 + 2 x + 4 x^2)/(1 - 2 x)^4, {x, 0, 30}], x] (* Vincenzo Librandi, Feb 22 2013 *)

PROG

(MAGMA) [(n^3 + n)*2^n: n in [1..30]]; // Vincenzo Librandi, Feb 22 2013

CROSSREFS

Cf. A128796; A128960; A128985; A129002.

Sequence in context: A229088 A270088 A115286 * A283660 A215701 A212699

Adjacent sequences:  A119632 A119633 A119634 * A119636 A119637 A119638

KEYWORD

nonn,easy

AUTHOR

Mohammad K. Azarian, May 02 2007

STATUS

approved

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Last modified November 17 19:15 EST 2018. Contains 317276 sequences. (Running on oeis4.)