a(n) is the smallest integer k > 1 such that k > n * pi(k), where pi() denotes the prime counting function.

A086511

a(n) is the smallest integer k > 1 such that k > n * pi(k), where pi() denotes the prime counting function.

Terms

    a(0) =2a(1) =9a(2) =28a(3) =121a(4) =336a(5) =1081a(6) =3060a(7) =8409a(8) =23527a(9) =64541a(10) =175198a(11) =480865a(12) =1304499a(13) =3523885a(14) =9557956a(15) =25874753a(16) =70115413a(17) =189961183a(18) =514272412a(19) =1394193581a(20) =3779849620a(21) =10246935645a(22) =27788566030a(23) =75370121161a(24) =204475052376a(25) =554805820453

External references