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a(n) = 3^n - n^4.
2

%I #14 Sep 08 2022 08:44:48

%S 1,2,-7,-54,-175,-382,-567,-214,2465,13122,49049,162506,510705,

%T 1565762,4744553,14298282,42981185,129056642,387315513,1162131146,

%U 3486624401,10460158722,31380825353,94142898986,282429204705

%N a(n) = 3^n - n^4.

%H Vincenzo Librandi, <a href="/A024027/b024027.txt">Table of n, a(n) for n = 0..200</a>

%F a(n) = 3^n - n^4.

%t Table[3^n-n^4,{n,0,60}] (* _Vladimir Joseph Stephan Orlovsky_, Feb 15 2011 *)

%o (Magma) [3^n-n^4 : n in [0..30]]; // _Vincenzo Librandi_, May 17 2011

%K sign

%O 0,2

%A _N. J. A. Sloane_