a(n) = Sum_{d|n} (tau(d)*pod(d)) where tau(k) = the number of divisors of k (A000005) and pod(k) = the product of the divisors of k (A007955).

A307100

a(n) = Sum_{d|n} (tau(d)*pod(d)) where tau(k) = the number of divisors of k (A000005) and pod(k) = the product of the divisors of k (A007955).

Terms

    a(0) =1a(1) =5a(2) =7a(3) =29a(4) =11a(5) =155a(6) =15a(7) =285a(8) =88a(9) =415a(10) =23a(11) =10547a(12) =27a(13) =803a(14) =917a(15) =5405a(16) =35a(17) =35228a(18) =39a(19) =48439a(20) =1785a(21) =1963a(22) =47a(23) =2665011a(24) =386a(25) =2735a(26) =3004a(27) =132539a(28) =59a(29) =6481465

External references