A134075 Primes of the form floor(Pi*p^2) where p is a prime.

907, 3019, 5281, 11689, 16741, 33329, 241051, 248063, 382649, 556819, 852757, 1104737, 1372627, 3122771, 3590089, 5482207, 5870659, 6505361, 7059161, 7753579, 8751097, 17452957, 18080497, 18261829, 26184449, 28633609, 30561919, 37544699, 37762223

Offset

1,1

Links

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Example

17^2*Pi = 907.920... and 907 is prime.

Prog

(PARI) forprime(p=2, 1e4, if(isprime(t=floor(Pi*p^2)), print1(p", "))) \\ Charles R Greathouse IV, Feb 15 2011

Crossrefs

Cf. A134076.

Sequence in context: A216468 A031939 A253228 * A316679 A177998 A253347

Adjacent sequences: A134072 A134073 A134074 * A134076 A134077 A134078

Keyword

easy,nonn

Author

Enoch Haga, Oct 06 2007

Extensions

Edited and corrected by N. J. A. Sloane, Oct 21, 2007

Status

approved