Number of integers whose arithmetic derivative is equal to the n-th primorial.

A351029

Number of integers whose arithmetic derivative is equal to the n-th primorial.

Terms

    a(0) =0a(1) =1a(2) =3a(3) =19a(4) =114a(5) =905a(6) =9494a(7) =124181a(8) =2044847a(9) =43755729a(10) =1043468388a(11) =30309948250

External references