Number of primes between Pi^(n-1) and Pi^n.

Terms

a(0) =2a(1) =2a(2) =7a(3) =14a(4) =37a(5) =100a(6) =271a(7) =742a(8) =2054a(9) =5813a(10) =16507a(11) =47501a(12) =137306a(13) =399685a(14) =1169789a(15) =3438915a(16) =10153559a(17) =30083443a(18) =89426830a(19) =266598341a(20) =796863253a(21) =2387439540a(22) =7168302094a(23) =21565117858a(24) =64993345011a(25) =196202749033a(26) =593205591259