Integer part of square root of n-th primorial, A002110(n).

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =48a(6) =173a(7) =714a(8) =3114a(9) =14936a(10) =80434a(11) =447839a(12) =2724103a(13) =17442771a(14) =114379899a(15) =784149081a(16) =5708691485a(17) =43849291330a(18) =342473913399