a(n) is the derivative of n via transport of structure from polynomials. Completely multiplicative with a(2) = 1, a(prime(i+1)) = prime(i)^i for i > 0.
A090884
a(n) is the derivative of n via transport of structure from polynomials. Completely multiplicative with a(2) = 1, a(prime(i+1)) = prime(i)^i for i > 0.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =9a(5) =2a(6) =125a(7) =1a(8) =4a(9) =9a(10) =2401a(11) =2a(12) =161051a(13) =125a(14) =18a(15) =1a(16) =4826809a(17) =4a(18) =410338673a(19) =9a(20) =250a(21) =2401a(22) =16983563041a(23) =2a(24) =81a(25) =161051a(26) =8a(27) =125a(29) =18a(31) =1
External references
- oeis: A090884