OFFSET
1,2
LINKS
Eric Weisstein's World of Mathematics, Pi-Prime
EXAMPLE
Pi^3 =31.0062766...; floor(Pi^3) = 31 is prime, hence 3 is a term.
floor(Pi^317)=39492046894389575314518015275156522234256325244858662\
9384386892199657951784561879730228789865483929643927422740165980523\
92448365675861748301474339092198412631 is prime.
MATHEMATICA
Do[ If[ PrimeQ[ Floor[ Pi^n ] ], Print[n] ], {n, 0, 4000} ]
$MaxExtraPrecision = 10^6; Do[k = Floor[Pi^n]; If[PrimeQ[k], Print[n]], {n, 1, 15000}] (* Ryan Propper *)
CROSSREFS
KEYWORD
hard,nonn
AUTHOR
Naohiro Nomoto, Feb 22 2001
EXTENSIONS
More terms from Vladeta Jovovic, Feb 24 2001
One more term from Robert G. Wilson v, May 09 2001
a(8)-a(11) from Ryan Propper, Oct 21 2005
a(12)-a(13) from Donovan Johnson, Feb 05 2008
STATUS
approved