a(n) = Product_{j=1..n} (prime(n)-j).

A090114

a(n) = Product_{j=1..n} (prime(n)-j).

Terms

    a(0) =1a(1) =2a(2) =24a(3) =360a(4) =30240a(5) =665280a(6) =57657600a(7) =1764322560a(8) =180503769600

External references