A038820 Number of primes less than n*10^11.

4118054813, 8007105059, 11818439135, 15581005657, 19308136142, 23007501786, 26684074310, 30341383527, 33981987586, 37607912018, 41220703418, 44821651132, 48411812843, 51992079337, 55563209929, 59125832286

Offset: 1

Author

Jeff Burch

Keywords

• nonn

Links

• Robert G. Wilson v, Table of n, a(n) for n = 1..10000
• Tomás Oliveira e Silva, Tables of values of pi(x) and of pi2(x)
• Andrew R. Booker, The Nth Prime Page

Crossrefs

Cf. A038801, A028505, A038812, A038813, A038814, A038815, A038816, A038817, A038818, A038819, A038821, A080122, A080123, A080124, A080125, A080126, A080127, A080128, A080129.

Programs

Mathematica

Table[ PrimePi[ n*10^11 ], {n, 1, 18}]

PARI

a(n)=primepi(10^11*n) \\ Charles R Greathouse IV, Apr 29 2015

Extensions

Edited and extended by Robert G. Wilson v, Jan 29 2003