login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A062074 n^3 * 3^n. 10
0, 3, 72, 729, 5184, 30375, 157464, 750141, 3359232, 14348907, 59049000, 235782657, 918330048, 3502727631, 13124466936, 48427561125, 176319369216, 634465620819, 2259436291848, 7971951402153, 27894275208000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Harry J. Smith, Table of n, a(n) for n=0,...,200

Index entries for linear recurrences with constant coefficients, signature (12,-54,108,-81).

FORMULA

G.f.: 3*x*(9*x^2+12*x+1) / (3*x-1)^4. - Colin Barker, Apr 30 2013

MATHEMATICA

lst={}; Do[i=3^n*n^3; AppendTo[lst, i], {n, 5!}]; lst (* Vladimir Joseph Stephan Orlovsky, Sep 22 2009 *)

Table[n^3 3^n, {n, 0, 20}] (* or *) LinearRecurrence[{12, -54, 108, -81}, {0, 3, 72, 729}, 30] (* Harvey P. Dale, Jun 17 2014 *)

PROG

(PARI) for(n=0, 22, print((n^3)*(3^n)))

(PARI) { for (n=0, 200, write("b062074.txt", n, " ", n^3 * 3^n) ) } [Harry J. Smith, Jul 31 2009]

CROSSREFS

Sequence in context: A073589 A089537 A321530 * A290004 A071645 A322189

Adjacent sequences:  A062071 A062072 A062073 * A062075 A062076 A062077

KEYWORD

easy,nonn

AUTHOR

Jason Earls, Jun 27 2001

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 21 14:52 EDT 2019. Contains 328301 sequences. (Running on oeis4.)