Prime(A215237).

Terms

a(0) =2a(1) =3a(2) =113a(3) =1637a(4) =2971a(5) =44293a(6) =305663a(7) =1133071a(8) =370261a(9) =1357201a(10) =46006769a(11) =268119517a(12) =291057379a(13) =3429782117a(14) =10502593103a(15) =10926444583a(16) =87241770619a(17) =226751019497