Composite numbers n such that 2^lpf(n) == 2 (mod n), where lpf(n) = A020639(n).

Terms

a(0) =341a(1) =1247a(2) =1387a(3) =2047a(4) =2701a(5) =3277a(6) =3683a(7) =4033a(8) =4369a(9) =4681a(10) =5461a(11) =5963a(12) =7957a(13) =8321a(14) =9017a(15) =9211a(16) =10261a(17) =13747a(18) =14351a(19) =14491a(20) =15709a(21) =17593a(22) =18721a(23) =19951a(24) =20191a(25) =23377a(26) =24929a(27) =25351a(28) =29041a(29) =31417