A090333 Nonprimes with no divisors >1 that are prefixes of other divisors in binary representation.

1, 9, 25, 33, 35, 49, 65, 69, 77, 91, 125, 129, 133, 141, 143, 145, 155, 161, 169, 209, 247, 259, 265, 267, 287, 289, 295, 299, 301, 305, 319, 323, 329, 341, 343, 361, 371, 377, 391, 395, 403, 407, 437, 451, 473, 481, 485, 493, 505, 515, 519, 527, 529, 533