A170784 a(n) = n^9*(n^2 + 1)/2.

0, 1, 1280, 98415, 2228224, 25390625, 186437376, 1008840175, 4362076160, 15884240049, 50500000000, 143834809151, 374084075520, 901382446705, 2035113108224, 4344099609375, 8830452760576, 17195242092065

Offset

0,3

Links

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

Index entries for linear recurrences with constant coefficients, signature (12, -66, 220, -495, 792, -924, 792, -495, 220, -66, 12, -1).

Formula

G.f.: (x + 1268*x^2 + 83121*x^3 + 1131504*x^4 + 4866222*x^5 + 7794168*x^6 + 4866222*x^7 + 1131504*x^8 + 83121*x^9 + 1268*x^10 + x^11)/(1-x)^12. - G. C. Greubel, Dec 05 2017

Mathematica

Table[n^9*(n^2+1)/2, {n, 0, 30}] (* G. C. Greubel, Dec 05 2017 *)

Prog

(Magma) [n^9*(n^2+1)/2: n in [0..20]]; // Vincenzo Librandi, Aug 26 2011
(PARI) for(n=0, 30, print1(n^9*(n^2+1)/2, ", ")) \\ G. C. Greubel, Dec 05 2017

Crossrefs

Sequence in context: A237953 A237236 A090006 * A269826 A270055 A252116

Adjacent sequences: A170781 A170782 A170783 * A170785 A170786 A170787

Keyword

nonn,easy

Author

N. J. A. Sloane, Dec 11 2009

Status

approved