Composite integers k such that 2^d == 2^(k/d) (mod k) for all d|k.

Terms

a(0) =341a(1) =1105a(2) =1387a(3) =2047a(4) =2701a(5) =3277a(6) =4033a(7) =4369a(8) =4681a(9) =5461a(10) =7957a(11) =8321a(12) =10261a(13) =13747a(14) =13981a(15) =14491a(16) =15709a(17) =18721a(18) =19951a(19) =23377a(20) =31417a(21) =31609a(22) =31621a(23) =35333a(24) =42799a(25) =49141a(26) =49981a(27) =60701a(28) =60787a(29) =65077