A017044 - OEIS

%I #12 Sep 08 2022 08:44:41

%S 625,20736,130321,456976,1185921,2560000,4879681,8503056,13845841,

%T 21381376,31640625,45212176,62742241,84934656,112550881,146410000,

%U 187388721,236421376,294499921,362673936

%N a(n) = (7*n + 5)^4.

%H Vincenzo Librandi, <a href="/A017044/b017044.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 + 17611*x + 32891*x^2 + 6481*x^3 + 16*x^4)/(x-1)^5. - _R. J. Mathar_, Jul 14 2016

%o (Magma) [(7*n+5)^4: n in [0..30] ]; // _Vincenzo Librandi_, Jul 18 2011

%K nonn,easy

%O 0,1

%A _N. J. A. Sloane_