a(n) = ((p-1)!/p) - ((p-1)*(p-1)!/p!), where p is the n-th prime.

A091330

a(n) = ((p-1)!/p) - ((p-1)*(p-1)!/p!), where p is the n-th prime.

Terms

    a(0) =0a(1) =0a(2) =4a(3) =102a(4) =329890a(5) =36846276

External references