Triangular array read by rows: T(n, k) = prime(n+1)^k * prime(n)^(k*(k-1)/2) with T(0,0) = 1.

Terms

a(0) =1a(1) =1a(2) =3a(3) =1a(4) =5a(5) =75a(6) =1a(7) =7a(8) =245a(9) =42875a(10) =1a(11) =11a(12) =847a(13) =456533a(14) =1722499009a(15) =1a(16) =13a(17) =1859a(18) =2924207a(19) =50597553721a(21) =1a(22) =17a(23) =3757a(24) =10793861a(25) =403139914489a(28) =1a(29) =19a(30) =6137a(31) =33698267