A017320 a(n) = (10*n + 4)^4.

256, 38416, 331776, 1336336, 3748096, 8503056, 16777216, 29986576, 49787136, 78074896, 116985856, 168896016, 236421376, 322417936, 429981696, 562448656, 723394816, 916636176, 1146228736, 1416468496

Offset

0,1

Links

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

Index entries for linear recurrences with constant coefficients, signature (5, -10, 10, -5, 1).

Formula

G.f.: -16*(16 + 2321*x + 8891*x^2 + 3691*x^3 + 81*x^4)/(x-1)^5. - R. J. Mathar, Mar 20 2018

Mathematica

(10 Range[0, 30]+4)^4 (* or *) LinearRecurrence[{5, -10, 10, -5, 1}, {256, 38416, 331776, 1336336, 3748096}, 30] (* Harvey P. Dale, Jan 08 2023 *)

Prog

(Magma) [(10*n+4)^4: n in [0..30] ]; // Vincenzo Librandi, Aug 01 2011

Crossrefs

Sequence in context: A206744 A207791 A018798 * A187455 A181251 A132637

Adjacent sequences: A017317 A017318 A017319 * A017321 A017322 A017323

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved