A017380 - OEIS

%I #13 Sep 08 2022 08:44:42

%S 6561,130321,707281,2313441,5764801,12117361,22667121,38950081,

%T 62742241,96059601,141158161,200533921,276922881,373301041,492884401,

%U 639128961,815730721,1026625681,1275989841,1568239201

%N a(n) = (10*n + 9)^4.

%H Vincenzo Librandi, <a href="/A017380/b017380.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).

%o (Magma) [(10*n+9)^4: n in [0..40]]; // _Vincenzo Librandi_, Aug 31 2011

%K nonn,easy

%O 0,1

%A _N. J. A. Sloane_