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 A365506 #7 Feb 16 2025 08:34:06 %S A365506 1,36,125,81,128 %N A365506 a(n) is the smallest perfect power that can be represented as the sum of n distinct perfect powers in exactly n ways, or -1 if no such number exists. %H A365506 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PerfectPower.html">Perfect Power</a>. %e A365506 For n = 2: 36 = 6^2 and 36 = 2^2 + 2^5 = 3^2 + 3^3. %Y A365506 Cf. A001597, A363040. %K A365506 nonn,more %O A365506 1,2 %A A365506 _Ilya Gutkovskiy_, Sep 07 2023