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A017115 a(n) = (8*n + 4)^3. 1

%I

%S 64,1728,8000,21952,46656,85184,140608,216000,314432,438976,592704,

%T 778688,1000000,1259712,1560896,1906624,2299968,2744000,3241792,

%U 3796416,4410944,5088448,5832000,6644672

%N a(n) = (8*n + 4)^3.

%H Vincenzo Librandi, <a href="/A017115/b017115.txt">Table of n, a(n) for n = 0..10000</a>

%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (4, -6, 4, -1).

%F G.f.: 64*(1+x)*(x^2 + 22*x + 1)/(x-1)^4. - _R. J. Mathar_, Jul 14 2016

%t LinearRecurrence[{4, -6, 4, -1},{64, 1728, 8000, 21952},24] (* _Ray Chandler_, Aug 04 2015 *)

%o (MAGMA) [(8*n+4)^3: n in [0..35] ]; // _Vincenzo Librandi_, Jul 21 2011

%K nonn,easy

%O 0,1

%A _N. J. A. Sloane_

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Last modified May 25 16:08 EDT 2019. Contains 323572 sequences. (Running on oeis4.)