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 A165156 #5 Aug 10 2023 18:03:34
%S A165156 0,-1,118,13983,1894076,361025495,96826261890,35181809198207,
%T A165156 16677063111790072,9999993868933742199,7400249593980659558990,
%U A165156 6624737245034612579099807,7056410013376700546645974068
%N A165156 n^(2*n-1)-(2*n-1)^n.
%F A165156 a(n) = A085524(n)-A085528(n-1).
%t A165156 p=1;lst={};Do[AppendTo[lst,n^p-p^n];p=p+2,{n,4!}];lst
%t A165156 Table[n^(2n-1)-(2n-1)^n,{n,20}] (* _Harvey P. Dale_, Aug 10 2023 *)
%Y A165156 Cf. A085524, A085528
%K A165156 sign
%O A165156 1,3
%A A165156 _Vladimir Joseph Stephan Orlovsky_, Sep 05 2009
%E A165156 Definition corrected by _R. J. Mathar_, Sep 06 2009