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 A324529 #7 Sep 08 2022 08:46:24 %S A324529 1,6,12,56,30,36,56,960,351,900,132,12096,182,1176,1800,31744,306, %T A324529 75816,380,168000,14112,4356,552,1658880,3875,14196,29160,21952,870, %U A324529 810000,992,2064384,17424,31212,58800,917070336,1406,21660,85176,23040000,1722,6223392 %N A324529 a(n) = lcm(sigma(n), pod(n)) where sigma(k) = the sum of divisors of k (A000203) and pod(n) = the product of divisors of k (A007955). %F A324529 a(n) = pod(n) for numbers n in A145551. %F A324529 a(n) = sigma(n) * pod(n) for numbers n in A014567. %e A324529 For n=4: a(4) = lcm(sigma(4), pod(4)) = lcm(7, 8) = 56. %o A324529 (Magma) [LCM(SumOfDivisors(n), &*[d: d in Divisors(n)]): n in [1.. 1000]] %o A324529 (PARI) a(n) = my(d=divisors(n)); lcm(vecsum(d), vecprod(d)); \\ _Michel Marcus_, Mar 05 2019 %Y A324529 Cf. A000005, A000203, A014567, A145551. %K A324529 nonn %O A324529 1,2 %A A324529 _Jaroslav Krizek_, Mar 05 2019