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A134075
Primes of the form floor(Pi*p^2) where p is a prime.
2
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
KEYWORD
easy,nonn
AUTHOR
Enoch Haga, Oct 06 2007
EXTENSIONS
Edited and corrected by N. J. A. Sloane, Oct 21, 2007
STATUS
approved