Replace k with k! in the prime indices of n.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =13a(5) =6a(6) =89a(7) =8a(8) =9a(9) =26a(10) =659a(11) =12a(12) =5443a(13) =178a(14) =39a(15) =16a(16) =49033a(17) =18a(18) =484037a(19) =52a(20) =267a(21) =1318a(22) =5222429a(23) =24a(24) =169a(25) =10886a(26) =27a(27) =356a(28) =61194647a(29) =78