A032642 Numbers n such that n concatenated with n + 2 is a lucky number.

1, 7, 19, 25, 31, 49, 61, 65, 71, 77, 101, 103, 107, 121, 125, 133, 139, 149, 157, 169, 173, 193, 205, 221, 233, 245, 295, 349, 359, 371, 385, 391, 413, 425, 431, 445, 457, 463, 479, 481, 517, 527, 533, 553, 575, 583, 587, 593, 605, 611, 617, 637, 641, 643