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 A357210 #23 Sep 23 2022 03:18:43
%S A357210 2,4,7,11,19,22,43,46,66,68,131,90,199,158,187,223,383,242,503,320,
%T A357210 441,478,793,436,824,716,879,734,1373,658,1595,1118,1313,1358,1579,
%U A357210 1103,2429,1776,1957,1556,3089,1532,3449,2192,2347,2784,4229,2144,4134,2882,3687,3258,5591
%N A357210 a(n) = Sum_{k=1..n} prime(k/gcd(n,k)).
%C A357210 Inverse Moebius transform of A127413.
%F A357210 a(n) = Sum_{d|n} A127413(d).
%t A357210 Table[Sum[Prime[k/GCD[n, k]], {k, 1, n}], {n, 1, 53}]
%o A357210 (PARI) a(n) = sum(k=1, n, prime(k/gcd(n,k))); \\ _Michel Marcus_, Sep 20 2022
%Y A357210 Cf. A000040, A057661, A127413, A130029, A333558.
%K A357210 nonn
%O A357210 1,1
%A A357210 _Ilya Gutkovskiy_, Sep 19 2022