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 A386892 #16 Aug 07 2025 16:54:39
%S A386892 12,21,36,44,61,81,89,104,105,166,172,181,276,288,289,324,395,401,480,
%T A386892 597,673,768,773,777,932,972,1065,1128,1230,1250,1376,1905,2033,2089,
%U A386892 2173,2244,2545,2557,3182,3388,3493,4148,4244,4368,4393,4652,4774
%N A386892 Numbers k expressible as x^y + y^z + z^x, where x, y, and z are integers > 1.
%H A386892 Andrew Howroyd, <a href="/A386892/b386892.txt">Table of n, a(n) for n = 1..10000</a>
%e A386892 a(7) = 89, which can be given by x=4, y=3, z=2.
%o A386892 (PARI) upto(lim) = { my(L=List()); for(x=2, logint(lim,2), for(y=2, min(x,logint(lim,x)), for(z=2, min(x,logint(lim,y)), my(t=x^y+y^z+z^x); if(t<=lim, listput(L,t)) ))); Set(L) } \\ _Andrew Howroyd_, Aug 06 2025
%Y A386892 Cf. A123207 (subsequence of primes).
%Y A386892 Cf. A076980.
%K A386892 nonn
%O A386892 1,1
%A A386892 _Ian Hahus_, Aug 06 2025