a(n) = numerator of Sum_{d|n} tau(d)/pod(d) where tau(k) = the number of the divisors of k (A000005) and pod(k) = the product of the divisors of k (A007955).
A323706
a(n) = numerator of Sum_{d|n} tau(d)/pod(d) where tau(k) = the number of the divisors of k (A000005) and pod(k) = the product of the divisors of k (A007955).
Terms
- a(0) =1a(1) =2a(2) =5a(3) =19a(4) =7a(5) =25a(6) =9a(7) =39a(8) =16a(9) =61a(10) =13a(11) =101a(12) =15a(13) =113a(14) =469a(15) =2501a(16) =19a(17) =2809a(18) =21a(19) =11263a(20) =865a(21) =265a(22) =25a(23) =133489a(24) =178a(25) =365a(26) =1300a(27) =29431a(28) =31a(29) =327601
External references
- oeis: A323706