Numbers k such that 4*10^k - 83 is prime.

Terms

a(0) =2a(1) =3a(2) =6a(3) =12a(4) =24a(5) =31a(6) =33a(7) =45a(8) =66a(9) =109a(10) =150a(11) =187a(12) =345a(13) =1000a(14) =1026a(15) =1189a(16) =1959a(17) =2754a(18) =3405a(19) =5047a(20) =16291a(21) =29958a(22) =41547a(23) =41709a(24) =48908a(25) =72274a(26) =100257a(27) =103981