A023098 a(n) is least k such that k and 6k are anagrams in base n (written in base 10).

384, 33558, 744, 1386, 1878, 28611, 24, 5070, 378, 6885, 7760, 161432, 792, 57, 26400, 410046, 16610, 13984, 840, 17745, 104, 26271, 1252776, 2262, 29952, 1467912, 39936, 165, 208080, 1302, 181800, 4587297, 5168, 64272, 48, 433698, 92400, 5031, 2376