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 A348512 #4 Oct 30 2021 08:47:51 %S A348512 1,4,9,8,12,36,27,24,14,48,36,72,24,108,108,32,48,56,54,96,243,144, %T A348512 108,216,32,96,162,216,72,432,243,128,324,192,324,112,60,216,216,288, %U A348512 96,972,108,288,168,432,324,288,80,128,432,192,192,648,432,648,486,288,216,864,96,972,378,128,288,1296,162,384,972,1296 %N A348512 a(n) = A003959(sigma(n)), where A003959 is multiplicative with a(p^e) = (p+1)^e and sigma is the sum of divisors function. %H A348512 <a href="/index/Si#SIGMAN">Index entries for sequences related to sigma(n)</a> %F A348512 Multiplicative with a(p^e) = A003959(1 + p + ... + p^e). %F A348512 a(n) = A003959(A000203(n)). %o A348512 (PARI) %o A348512 A003959(n) = { my(f = factor(n)); for(i=1, #f~, f[i, 1]++); factorback(f); }; %o A348512 A348512(n) = A003959(sigma(n)); %Y A348512 Cf. A000203, A003959, A051027. %K A348512 nonn,mult %O A348512 1,2 %A A348512 _Antti Karttunen_, Oct 29 2021