a(n) = A003415(A276085(n)), where A003415 is the arithmetic derivative and A276085 is the primorial base log-function.
A373842
a(n) = A003415(A276085(n)), where A003415 is the arithmetic derivative and A276085 is the primorial base log-function.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =1a(4) =5a(5) =1a(6) =31a(7) =1a(8) =4a(9) =1a(10) =247a(11) =4a(12) =2927a(13) =1a(14) =12a(15) =4a(16) =40361a(17) =1a(18) =716167a(19) =12a(20) =80a(21) =1a(22) =14117683a(23) =1a(24) =16a(25) =1a(26) =5a(27) =80a(28) =334406399a(29) =6
External references
- oeis: A373842