a(n) = product of all even numbers between n-th prime and (n+1)-st prime.

Terms

a(0) =1a(1) =4a(2) =6a(3) =80a(4) =12a(5) =224a(6) =18a(7) =440a(8) =17472a(9) =30a(10) =39168a(11) =1520a(12) =42a(13) =2024a(14) =124800a(15) =175392a(16) =60a(17) =261888a(18) =4760a(19) =72a(20) =438672a(21) =6560a(22) =635712a(23) =74718720a(24) =9800a(25) =102a(26) =11024a(27) =108a(28) =12320a(30) =16640