a(n) = denominator 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).
A323707
a(n) = denominator 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) =1a(2) =3a(3) =8a(4) =5a(5) =9a(6) =7a(7) =16a(8) =9a(9) =25a(10) =11a(11) =32a(12) =13a(13) =49a(14) =225a(15) =1024a(16) =17a(17) =972a(18) =19a(19) =4000a(20) =441a(21) =121a(22) =23a(23) =41472a(24) =125a(25) =169a(26) =729a(27) =10976a(28) =29a(29) =101250
External references
- oeis: A323707