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A017116 a(n) = (8*n + 4)^4. 1
256, 20736, 160000, 614656, 1679616, 3748096, 7311616, 12960000, 21381376, 33362176, 49787136, 71639296, 100000000, 136048896, 181063936, 236421376, 303595776, 384160000, 479785216, 592240896 (list; graph; refs; listen; history; text; internal format)
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.: -256*(1 + 76*x + 230*x^2 + 76*x^3 + x^4)/(x-1)^5. - R. J. Mathar, May 08 2015

MATHEMATICA

(8*Range[0, 20]+4)^4 (* or *) LinearRecurrence[{5, -10, 10, -5, 1}, {256, 20736, 160000, 614656, 1679616}, 20] (* Harvey P. Dale, Aug 05 2019 *)

PROG

(MAGMA) [(8*n+4)^4: n in [0..35] ]; // Vincenzo Librandi, Jul 21 2011

CROSSREFS

Sequence in context: A090650 A206181 A251968 * A206055 A237134 A205948

Adjacent sequences:  A017113 A017114 A017115 * A017117 A017118 A017119

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified November 12 19:33 EST 2019. Contains 329078 sequences. (Running on oeis4.)