Numbers n such that 281*2^n-1 is prime.

Terms

a(0) =2a(1) =38a(2) =62a(3) =82a(4) =598a(5) =890a(6) =1810a(7) =2242a(8) =2450a(9) =17786a(10) =51470a(11) =65558a(12) =91870a(13) =93850