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 A369750 #6 Jun 26 2024 21:51:54
%S A369750 0,4,9,8,25,59,49,128,243,2173,121,10379,169,131415,180272,524288,289,
%T A369750 9982931,361,536949037,129156970,2147484979,529,138601214939,48828125,
%U A369750 2199023257749,94143178827,8796093845751,841,209369086423336,961,9007199254740992
%N A369750 a(n) = Sum_{p|n, p prime} p^prime(n/p).
%F A369750 a(p^k) = p^prime(p^(k-1)), for p prime and k >= 1. - _Wesley Ivan Hurt_, Jun 26 2024
%t A369750 Table[DivisorSum[n, #^Prime[n/#] &, PrimeQ[#] &], {n, 40}]
%Y A369750 Cf. A000040, A351368, A369748, A369749.
%K A369750 nonn,easy
%O A369750 1,2
%A A369750 _Wesley Ivan Hurt_, Jan 30 2024