Number of primes p with n! < p <= (n+1)!.

Terms

a(0) =0a(1) =1a(2) =2a(3) =6a(4) =21a(5) =98a(6) =547a(7) =3556a(8) =26738a(9) =227720a(10) =2170267a(11) =22877331a(12) =264314464a(13) =3320870054a(14) =45076422125a(15) =657316885209