A052009 Sum of 'n with digits sorted ascending' and 'n with digits sorted descending' is prime.

1, 10, 100, 107, 109, 116, 118, 146, 158, 161, 164, 166, 170, 178, 181, 185, 187, 188, 190, 229, 239, 245, 254, 257, 269, 275, 277, 292, 293, 296, 299, 329, 338, 344, 356, 365, 368, 383, 386, 392, 407, 416, 425, 434, 443, 452, 455, 461, 467, 469, 470, 476