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 A369866 #6 Jun 26 2024 15:15:16
%S A369866 0,4,9,64,25,7992,49,2097152,59049,100000001000,121,106993241210880,
%T A369866 169,30491346729331198648,8649756618750,75557863725914323419136,289,
%U A369866 74347713614042750878184448000,361,53687091200000000000000000001280000000,30041942495081695978842,412195366437884247746798137865015318817176
%N A369866 a(n) = Sum_{p|n, p prime} n^prime(n/p).
%F A369866 a(p^k) = p^(k*prime(p^(k-1))), for p prime and k >= 1. - _Wesley Ivan Hurt_, Jun 26 2024
%t A369866 Table[DivisorSum[n, n^Prime[n/#] &, PrimeQ[#] &], {n, 30}]
%Y A369866 Cf. A000040, A351368, A369748.
%K A369866 nonn,easy
%O A369866 1,2
%A A369866 _Wesley Ivan Hurt_, Feb 03 2024