A168227 a(n) = n^4*(n^8 + 1)/2.

0, 1, 2056, 265761, 8388736, 122070625, 1088391816, 6920644801, 34359740416, 141214771521, 500000005000, 1569214195681, 4458050234496, 11649042575521, 28346956206856, 64873168970625, 140737488388096, 291311118656641

Offset

0,3

Links

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

Formula

G.f.: (x + 2043*x^2 + 239111*x^3 + 5093925*x^4 + 33159114*x^5 + 81256206*x^6 + 81256206*x^7 + 33159114*x^8 + 5093925*x^9 + 239111*x^10 + 2043*x^11 + x^12)/(1 - x)^13. - G. C. Greubel, Jul 16 2016

Mathematica

Table[n^4*(n^8 + 1)/2, {n, 0, 50}] (* G. C. Greubel, Jul 16 2016 *)

Prog

(Magma) [n^4*(n^8+1)/2: n in [0..20]]; // Vincenzo Librandi, Aug 28 2011

Crossrefs

Sequence in context: A252509 A250331 A234772 * A321488 A074996 A252112

Adjacent sequences: A168224 A168225 A168226 * A168228 A168229 A168230

Keyword

nonn,easy

Author

N. J. A. Sloane, Dec 11 2009

Status

approved