A067906 Primes of the form floor((5/4)^k).

2, 3, 5, 7, 11, 211, 1009, 3851, 7523, 9403, 18367, 213821, 815663, 2010764683, 831632781251, 23636425261531, 537430088605367, 7896825413969130677, 226627774989027955951103, 451298593966207394017315520293

Offset: 1

Author

Benoit Cloitre, Mar 03 2002

Keywords

• nonn

Links

• Charles R Greathouse IV, Table of n, a(n) for n = 1..31

Programs

Mathematica

Union[Select[Floor[(5/4)^Range[0,400]],PrimeQ]] (* Harvey P. Dale, Jan 06 2012 *)

PARI

for(n=1,1e4, if(ispseudoprime(t=floor((5/4)^n)),print1(t", "))) \\ Charles R Greathouse IV, Feb 17 2011