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 A369915 #13 Jul 09 2025 15:57:22
%S A369915 0,1,1,1,1,5,1,2,1,7,1,7,1,9,8,4,1,11,1,9,10,13,1,14,1,15,3,11,1,31,1,
%T A369915 8,14,19,12,13,1,21,16,18,1,41,1,15,14,25,1,28,1,27,20,17,1,33,16,22,
%U A369915 22,31,1,47,1,33,16,16,18,61,1,21,26,59,1,26,1,39,28,23,18
%N A369915 a(n) = Sum_{p|n, p prime} lcm(p, n/p) / p.
%H A369915 <a href="/index/Lc#lcm">Index entries for sequences related to lcm's</a>
%F A369915 a(p^k) = p^(k-2+floor(1/k)) for p prime and k>=1. - _Wesley Ivan Hurt_, Jul 09 2025
%t A369915 Table[DivisorSum[n, LCM[#, n/#]/# &, PrimeQ[#] &], {n, 100}]
%Y A369915 Cf. A332619, A345266, A345302.
%K A369915 nonn,easy
%O A369915 1,6
%A A369915 _Wesley Ivan Hurt_, Feb 05 2024