Numbers k such that 205*2^k+1 is prime.

Terms

a(0) =2a(1) =6a(2) =26a(3) =30a(4) =40a(5) =86a(6) =126a(7) =130a(8) =150a(9) =240a(10) =786a(11) =1146a(12) =2974a(13) =5162a(14) =5750a(15) =14256a(16) =30894a(17) =35622a(18) =42714a(19) =89290a(20) =93456a(21) =111926a(22) =112162a(23) =760450a(24) =1355814a(25) =1358016a(26) =4270310a(27) =5532904