Numbers that are the product of two odd numbers x*y such that 2^x (mod y) = 2^y (mod x) = 2.

Terms

a(0) =9a(1) =25a(2) =49a(3) =121a(4) =169a(5) =289a(6) =341a(7) =361a(8) =525a(9) =529a(10) =651a(11) =765a(12) =841a(13) =961a(14) =1155a(15) =1369a(16) =1387a(17) =1681a(18) =1683a(19) =1849a(20) =1935a(21) =2047a(22) =2209a(23) =2701a(24) =2809a(25) =3277a(26) =3481a(27) =3721a(28) =3751a(29) =4033