a(n) = numerator of Sum_{d|n} (1/pod(d)) where pod(k) = the product of the divisors of k (A007955).
A324501
a(n) = numerator of Sum_{d|n} (1/pod(d)) where pod(k) = the product of the divisors of k (A007955).
Terms
- a(0) =1a(1) =3a(2) =4a(3) =13a(4) =6a(5) =67a(6) =8a(7) =105a(8) =37a(9) =171a(10) =12a(11) =3433a(12) =14a(13) =323a(14) =346a(15) =1681a(16) =18a(17) =11071a(18) =20a(19) =14681a(20) =652a(21) =771a(22) =24a(23) =664321a(24) =151a(25) =1067a(26) =1000a(27) =38921a(28) =30a(29) =1681201
External references
- oeis: A324501