Triangle read by rows: T(n,k) = T(n-1,k-1)*T(n,k-1) and T(n,1) = prime(n).

Terms

a(0) =2a(1) =3a(2) =6a(3) =5a(4) =15a(5) =90a(6) =7a(7) =35a(8) =525a(9) =47250a(10) =11a(11) =77a(12) =2695a(13) =1414875a(14) =66852843750a(15) =13a(16) =143a(17) =11011a(18) =29674645a(21) =17a(22) =221a(23) =31603a(24) =347980633