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 A374418 #11 Jul 19 2024 19:13:42 %S A374418 7,325,87539319 %N A374418 a(n) is the smallest number which can be represented as the sum of 2 distinct positive n-th powers in exactly 3 ways, or -1 if no such number exists. %C A374418 See also comments in A338799. %H A374418 Wikipedia, <a href="https://en.wikipedia.org/wiki/Lander,_Parkin,_and_Selfridge_conjecture">Lander, Parkin, and Selfridge conjecture</a> %e A374418 a(2) = 325 = 1^2 + 18^2 = 6^2 + 17^2 = 10^2 + 15^2. %e A374418 a(3) = 87539319 = 167^3 + 436^3 = 228^3 + 423^3 = 255^3 + 414^3. %Y A374418 Cf. A046881, A338799, A374421, A374422, A374423, A374424, A374425. %K A374418 nonn,bref,hard,more %O A374418 1,1 %A A374418 _Ilya Gutkovskiy_, Jul 08 2024