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

0,2

Links

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

Formula

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

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 *)

Prog

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

Crossrefs

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

Sequence in context: A009270 A033838 A181373 * A357542 A374275 A339185

Adjacent sequences: A046062 A046063 A046064 * A046066 A046067 A046068

Keyword

sign

Author

N. J. A. Sloane

Status

approved