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).

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).

Terms

    a(0) =1a(1) =6a(2) =12a(3) =56a(4) =30a(5) =36a(6) =56a(7) =960a(8) =351a(9) =900a(10) =132a(11) =12096a(12) =182a(13) =1176a(14) =1800a(15) =31744a(16) =306a(17) =75816a(18) =380a(19) =168000a(20) =14112a(21) =4356a(22) =552a(23) =1658880a(24) =3875a(25) =14196a(26) =29160a(27) =21952a(28) =870a(29) =810000

External references