A032688 Numbers n such that n surrounded by digit '5' is a lucky number.

3, 23, 29, 32, 33, 38, 45, 51, 65, 75, 90, 96, 108, 110, 113, 116, 125, 132, 135, 147, 167, 183, 185, 186, 195, 204, 216, 218, 227, 236, 242, 246, 248, 254, 255, 257, 263, 275, 276, 278, 284, 293, 297, 300, 314, 315, 320, 323, 324, 326, 330, 338, 345, 347