A023096 Least k such that k and 4k are anagrams in base n (written in base 10).
144, 1360, 76, 532, 16, 1782, 190, 220, 244, 39, 9408, 260, 672, 833, 24, 30324, 560, 1183, 880, 115, 744, 539625, 2574, 40977, 168, 3857, 3310, 4433, 63424, 77, 158542, 2940, 2412, 3848, 304, 7111, 6402200, 9758, 8834, 387, 710160, 4635, 13984, 120978
Offset: 5