OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
EXAMPLE
floor (13Pi + .5) = 41.
floor (17Pi + .5) = 53.
MATHEMATICA
lst={}; Do[p=Prime[n]; If[PrimeQ[Round[p*Pi]], AppendTo[lst, p]], {n, 10^3}]; lst
Select[Prime[Range[400]], PrimeQ[Round[# Pi]]&] (* Harvey P. Dale, Mar 02 2024 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vladimir Joseph Stephan Orlovsky, Aug 25 2008
EXTENSIONS
Edited by Charles R Greathouse IV, Nov 11 2009
STATUS
approved