This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A046065 #18 May 31 2025 17:53:15
%S A046065 -1,-2,0,118,2800,61318,1417472,35570638,973741824,29023111918,
%T A046065 938082635776,32730551749894,1227224552173568,49239697945731382,
%U A046065 2105895743771443200,95663702284183543582,4600926951773050961920,233592048827366522661214
%N A046065 a(n) = n^(n+2) - (n+2)^n.
%H A046065 G. C. Greubel, <a href="/A046065/b046065.txt">Table of n, a(n) for n = 0..350</a>
%F A046065 a(n) = n^(n+2) - (n+2)^n.
%t A046065 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 *)
%t A046065 Table[n^(n+2)-(n+2)^n,{n,0,20}] (* _Harvey P. Dale_, May 31 2025 *)
%o A046065 (Magma) [n^(n+2) -(n+2)^n: n in [0..40]]; // _G. C. Greubel_, Jul 14 2021
%o A046065 (Sage) [n^(n+2) -(n+2)^n for n in (0..40)] # _G. C. Greubel_, Jul 14 2021
%Y A046065 Cf. A007925 (n^(n+1) - (n+1)^n).
%K A046065 sign
%O A046065 0,2
%A A046065 _N. J. A. Sloane_