Numbers k such that 291*2^k + 1 is prime.

Terms

a(0) =4a(1) =12a(2) =16a(3) =20a(4) =24a(5) =39a(6) =40a(7) =65a(8) =77a(9) =95a(10) =240a(11) =256a(12) =303a(13) =376a(14) =416a(15) =596a(16) =760a(17) =1037a(18) =1045a(19) =1553a(20) =2452a(21) =2559a(22) =2596a(23) =2607a(24) =4616a(25) =5703a(26) =8620a(27) =8799a(28) =10180a(29) =12756