Write n as Product_{i=1..k} prime(i)^e_i, where prime(i) is the i-th prime number and e_i is a nonnegative integer. a(n) = Sum_{i=1..k} e_i*n^(i-1).
A090883
Write n as Product_{i=1..k} prime(i)^e_i, where prime(i) is the i-th prime number and e_i is a nonnegative integer. a(n) = Sum_{i=1..k} e_i*n^(i-1).
Terms
- a(0) =0a(1) =1a(2) =3a(3) =2a(4) =25a(5) =7a(6) =343a(7) =3a(8) =18a(9) =101a(10) =14641a(11) =14a(12) =371293a(13) =2745a(14) =240a(15) =4a(16) =24137569a(17) =37a(18) =893871739a(19) =402a(20) =9282a(21) =234257a(22) =78310985281a(23) =27a(24) =1250a(25) =11881377a(26) =81a(27) =21954a(29) =931a(31) =5
External references
- oeis: A090883