A046065 a(n) = n^(n+2) - (n+2)^n.

-1, -2, 0, 118, 2800, 61318, 1417472, 35570638, 973741824, 29023111918, 938082635776, 32730551749894, 1227224552173568, 49239697945731382, 2105895743771443200, 95663702284183543582, 4600926951773050961920, 233592048827366522661214

Offset: 0

Author

N. J. A. Sloane

Keywords

• sign

Links

• G. C. Greubel, Table of n, a(n) for n = 0..350

Crossrefs

Cf. A007925 (n^(n+1) - (n+1)^n).

Programs

Magma

[n^(n+2) -(n+2)^n: n in [0..40]]; // G. C. Greubel, Jul 14 2021

Mathematica

a[n_]:=n^(n+2)-(n+2)^n;lst={};Do[AppendTo[lst,a[n]],{n,0,4!}];lst (* Vladimir Joseph Stephan Orlovsky, Dec 20 2008 *)
Table[n^(n+2)-(n+2)^n,{n,0,20}] (* Harvey P. Dale, May 31 2025 *)

Sage

[n^(n+2) -(n+2)^n for n in (0..40)] # G. C. Greubel, Jul 14 2021

Formula

a(n) = n^(n+2) - (n+2)^n.