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

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =11a(5) =211a(6) =1009a(7) =3851a(8) =7523a(9) =9403a(10) =18367a(11) =213821a(12) =815663a(13) =2010764683a(14) =831632781251