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

%I #16 Sep 08 2022 08:44:41

%S 81,14641,130321,531441,1500625,3418801,6765201,12117361,20151121,

%T 31640625,47458321,68574961,96059601,131079601,174900625,228886641,

%U 294499921,373301041,466948881,577200625

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

%H Vincenzo Librandi, <a href="/A017104/b017104.txt">Table of n, a(n) for n = 0..10000</a>

%H <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (5,-10,10,-5,1).

%F G.f: -(625*x^4+25436*x^3+57926*x^2+14236*x+81)/(x-1)^5. [_Colin Barker_, Oct 11 2012]

%t Table[(8 n + 3)^4, {n, 0, 40}] (* _Bruno Berselli_, Sep 17 2015 *)

%o (Magma) [(8*n+3)^4: n in [0..30]]; // _Vincenzo Librandi_, Jul 12 2011

%K nonn,easy

%O 0,1

%A _N. J. A. Sloane_.