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

 

Logo

The submissions stack has been unacceptably high for several months now. Please voluntarily restrict your submissions and please help with the editing. (We don't want to have to impose further limits.)

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A060883 n^6 + n^3 + 1. 4
1, 3, 73, 757, 4161, 15751, 46873, 117993, 262657, 532171, 1001001, 1772893, 2987713, 4829007, 7532281, 11394001, 16781313, 24142483, 34018057, 47052741, 64008001, 85775383, 113390553, 148048057, 191116801, 244156251, 308933353 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

a(n) = Phi_9((n) where Phi_k is the k-th cyclotomic polynomial.

LINKS

Harry J. Smith, Table of n, a(n) for n=0,...,1000

Index to values of cyclotomic polynomials of integer argument

FORMULA

G.f.: (1-4*x+73*x^2+274*x^3+325*x^4+50*x^5+x^6)/(1-x)^7. [Colin Barker, Apr 21 2012]

MAPLE

with (combinat):seq(fibonacci(3, n^3)+n^3, n=0..30); - Zerinvary Lajos, May 25 2008

# Alternative

A060883 := proc(n)

        numtheory[cyclotomic](9, n) ;

end proc:

seq(A060883(n), n=0..20) ; # R. J. Mathar, Feb 07 2014

PROG

(PARI) { for (n=0, 1000, write("b060883.txt", n, " ", n^6 + n^3 + 1); ) } [From Harry J. Smith, Jul 13 2009]

CROSSREFS

Sequence in context: A142078 A054689 A256144 * A162601 A173807 A093165

Adjacent sequences:  A060880 A060881 A060882 * A060884 A060885 A060886

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, May 05 2001

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified August 29 02:14 EDT 2015. Contains 261184 sequences.