A023066 k and 4k are anagrams in base 6 (written in base 6).

10144, 10432, 11454, 12345, 100144, 100432, 101440, 101544, 102043, 102435, 104302, 104320, 104325, 105432, 114540, 114554, 115454, 120453, 123045, 123450, 123455, 123545, 124535, 125345, 1000144, 1000432, 1001440, 1001544, 1002043