A048323 Numbers whose base-12 expansions, read from left to right, have run lengths that strictly decrease.
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 26, 39, 52, 65, 78, 91, 104, 117, 130, 143, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 312, 313, 314, 315, 316, 317, 318, 319, 320, 321, 322, 323, 468, 469, 470, 471, 472, 473, 474, 475, 476, 477, 478
Offset: 0