A023095 a(n) is least k such that k and 3k are anagrams in base n (written in base 10).

75, 142, 315, 12, 819, 84, 1035, 15, 198, 2766, 9555, 56, 315, 8352, 20893, 45, 950, 22000, 819, 132, 63204, 24492, 114075, 91, 2646, 938, 30015, 240, 182807, 118592, 333795, 153, 5670, 187416, 73815, 380, 623610, 176820, 5699, 231, 10406, 489808