a(n) = k! - A051674(n), where k is the smallest number for which A051674(n) <= k! where A051674(n) = prime(n)^prime(n).

A137322

a(n) = k! - A051674(n), where k is the smallest number for which A051674(n) <= k! where A051674(n) = prime(n)^prime(n).

Terms

    a(0) =2a(1) =93a(2) =1915a(3) =2805257

External references