Semiprimes p*q with p < q and 2^p (mod q) == 2^q (mod p).

Terms

a(0) =341a(1) =731a(2) =1333a(3) =1387a(4) =1727a(5) =2047a(6) =2701a(7) =3277a(8) =3503a(9) =3763a(10) =4033a(11) =4369a(12) =4681a(13) =5461a(14) =7957a(15) =8321a(16) =9509a(17) =10261a(18) =10669a(19) =13747a(20) =14491a(21) =15709a(22) =17557a(23) =17861a(24) =18721a(25) =19147a(26) =19951a(27) =20737a(28) =23377a(29) =31417