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 A374230 #4 Jul 01 2024 19:14:31 %S A374230 17,423,435888,199898912404 %N A374230 a(n) is the smallest number which can be represented as the sum of four distinct n-th powers of primes in exactly n ways, or -1 if no such number exists. %e A374230 a(2) = 423 = 2^2 + 3^2 + 7^2 + 19^2 = 2^2 + 3^2 + 11^2 + 17^2. %Y A374230 Cf. A349764, A374228, A374229. %K A374230 nonn,hard,more %O A374230 1,1 %A A374230 _Ilya Gutkovskiy_, Jul 01 2024