A032690 Numbers k such that k surrounded by digit '9' is a lucky number.
7, 13, 24, 33, 34, 39, 40, 42, 54, 64, 78, 97, 99, 103, 105, 108, 112, 123, 126, 127, 129, 132, 133, 139, 142, 147, 150, 163, 172, 177, 205, 217, 219, 223, 229, 237, 240, 255, 256, 258, 259, 265, 268, 270, 273, 274, 277, 282, 286, 292, 309, 312, 313, 316
Offset: 1