The n-th pi-based arithmetic derivative of n.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =4a(5) =0a(6) =4a(7) =4a(8) =12288a(9) =81920a(10) =0a(11) =0a(12) =278380544a(13) =4a(14) =4931584a(15) =278380544a(17) =4a(18) =128412352512