a(n) = Product_{k=1..n} P(k), where P(k) is the smallest prime >= k.

A118456

a(n) = Product_{k=1..n} P(k), where P(k) is the smallest prime >= k.

Terms

    a(0) =2a(1) =4a(2) =12a(3) =60a(4) =300a(5) =2100a(6) =14700a(7) =161700a(8) =1778700a(9) =19565700a(10) =215222700a(11) =2797895100a(12) =36372636300a(13) =618334817100

External references