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 A162487 #6 Mar 03 2020 21:04:17 %S A162487 2,2,2,2,2,5,3,15,7,33,8,9,21,34,9,56,80,32,67,97,65,45,36,133,98,51, %T A162487 9,76,20,8,157,87,200,214,2,20,91,2,111,122,5,247,142,56,98,342,184, %U A162487 289,21,364,32,2,365,423,34,91,157,329,441,234,234,98,87,291,513 %N A162487 Values of y for A094133: primes of the form x^y + y^x, x > y > 1. %C A162487 See A094133 for links, references and more information. %C A162487 Whereas a list of the possible x-values can be established by a brute-force search, this is not possible for the y-values. Some, however, may easily be excluded. For example, 4 cannot occur in this sequence, since for even y, x must be odd, and for x = 2k - 1, x^4 + 4^x = (x^2 + 2^k*x + 2^x)(x^2 - 2^k*x + 2^x). %F A162487 A094133(n) = A162486(n)^A162487(n) + A162487(n)^A162486(n). %K A162487 nonn %O A162487 1,1 %A A162487 _M. F. Hasler_, Jul 04 2009 %E A162487 More terms from _Jinyuan Wang_, Mar 03 2020