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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A168663 a(n) = n^7*(n^6 + 1)/2. 1
0, 1, 4160, 798255, 33562624, 610390625, 6530486976, 48444916975, 274878955520, 1270935305649, 5000005000000, 17261365815551, 53496620605440, 151437584670385, 396857439333824, 973097619609375, 2251799947902976 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..10000

Index entries for linear recurrences with constant coefficients, signature (14,-91,364,-1001,2002,-3003,3432,-3003,2002,-1001,364,-91,14,-1).

FORMULA

From G. C. Greubel, Jul 28 2016: (Start)

G.f.: x*(1 + 4146*x + 740106*x^2 + 22765250*x^3 + 211641855*x^4 + 752814348*x^5 + 1137578988*x^6 + 752814348*x^7 + 211641855*x^8 + 22765250*x^9 + 740106*x^10 + 4146*x^11 + x^12)/(1 - x)^14.

E.g.f.: (1/2)*x*(2 + 4158*x + 261926*x^2 + 2532880*x^3 + 7508641*x^4 + 9321333*x^5 + 5715425*x^6 + 1899612*x^7 + 359502*x^8 + 39325*x^9 + 2431*x^10 + 78*x^11 + x^12)*exp(x). (end)

MATHEMATICA

Table[n^7(n^6+1)/2, {n, 0, 20}] (* Harvey P. Dale, Jan 20 2013 *)

PROG

(MAGMA) [n^7*(n^6+1)/2: n in [0..20]]; // Vincenzo Librandi, Aug 28 2011

(PARI) a(n)=n^7*(n^6+1)/2 \\ Charles R Greathouse IV, Jul 28 2016

CROSSREFS

Sequence in context: A243025 A196494 A104824 * A043627 A250161 A256836

Adjacent sequences:  A168660 A168661 A168662 * A168664 A168665 A168666

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Dec 11 2009

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 16 23:58 EDT 2018. Contains 313809 sequences. (Running on oeis4.)