A017177 (9n+1)^5.

1, 100000, 2476099, 17210368, 69343957, 205962976, 503284375, 1073741824, 2073071593, 3707398432, 6240321451, 10000000000, 15386239549, 22877577568, 33038369407, 46525874176, 64097340625

Offset

0,2

Links

Table of n, a(n) for n=0..16.

Index entries for linear recurrences with constant coefficients, signature (6,-15,20,-15,6,-1).

Formula

G.f.: ( 1+99994*x+1876114*x^2+3853754*x^3+1223249*x^4+32768*x^5 ) / (x-1)^6 . - R. J. Mathar, Jul 14 2016

Mathematica

(9*Range[0, 20]+1)^5 (* or *) LinearRecurrence[{6, -15, 20, -15, 6, -1}, {1, 100000, 2476099, 17210368, 69343957, 205962976}, 20] (* Harvey P. Dale, Jun 21 2021 *)

Crossrefs

Sequence in context: A027663 A168652 A277399 * A017273 A017513 A099210

Adjacent sequences: A017174 A017175 A017176 * A017178 A017179 A017180

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved