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 A085602 #19 Feb 27 2020 22:14:25 %S A085602 2,28,3126,823544,387420490,285311670612,302875106592254, %T A085602 437893890380859376,827240261886336764178,1978419655660313589123980, %U A085602 5842587018385982521381124422,20880467999847912034355032910568,88817841970012523233890533447265626 %N A085602 Numbers of the form (2n+1)^(2n+1) + 1. %C A085602 Also even Sierpinski numbers of the first kind. %C A085602 No term is a square. Moreover, x^x + 1 != k^x, for if it were, we would have a counterexample to Fermat's Last Theorem. %H A085602 Harvey P. Dale, <a href="/A085602/b085602.txt">Table of n, a(n) for n = 1..193</a> %F A085602 a(n) = (2*n-1)^(2*n-1)+1. - _Alois P. Heinz_, Feb 27 2020 %t A085602 #^#+1&/@Range[1,21,2] (* _Harvey P. Dale_, Dec 08 2012 *) %o A085602 (PARI) forstep(x=1,20,2,print1(x^x+1" ")) %Y A085602 Bisection of A014566 (odd part). %K A085602 easy,nonn %O A085602 1,1 %A A085602 _Cino Hilliard_, Jul 07 2003