login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A087933 Primes p such that pi(2^k) = p, for some k > 1. 0

%I

%S 2,11,31,97,12251,564163

%N Primes p such that pi(2^k) = p, for some k > 1.

%C The next term is greater than pi(2^86).

%C The prime terms in A007053. - _Jinyuan Wang_, Aug 26 2019

%o (PARI) lista(nn) = {for (n=1, nn, if (isprime(k=primepi(2^n)), print1(k, ", ")););} \\ _Michel Marcus_, Aug 26 2019

%Y Cf. A007053.

%K nonn,more

%O 1,1

%A _Cino Hilliard_, Oct 27 2003

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 18 23:02 EDT 2021. Contains 348070 sequences. (Running on oeis4.)