Numbers k such that k^7*2^k - 1 is a prime.

Terms

a(0) =6a(1) =45a(2) =55a(3) =80a(4) =135a(5) =187a(6) =205a(7) =384a(8) =405a(9) =1291a(10) =1364a(11) =2301a(12) =2486a(13) =2844a(14) =16892a(15) =27308a(16) =30152a(17) =32535a(18) =45324a(19) =71522a(20) =72865