Primes of the form (k+1)!*k/2 + 1.

Terms

a(0) =2a(1) =7a(2) =37a(3) =241a(4) =1801a(5) =15121a(6) =141121a(7) =1451521a(8) =16329601a(9) =199584001a(10) =37362124801a(11) =566658892801