A024027 a(n) = 3^n - n^4.

1, 2, -7, -54, -175, -382, -567, -214, 2465, 13122, 49049, 162506, 510705, 1565762, 4744553, 14298282, 42981185, 129056642, 387315513, 1162131146, 3486624401, 10460158722, 31380825353, 94142898986, 282429204705

Offset: 0

Author

N. J. A. Sloane

Keywords

• sign

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..200

Programs

Magma

[3^n-n^4 : n in [0..30]]; // Vincenzo Librandi, May 17 2011

Mathematica

Table[3^n-n^4,{n,0,60}] (* Vladimir Joseph Stephan Orlovsky, Feb 15 2011 *)

Formula

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