A055121 Base-11 complement of n (write n in base 11, then replace each digit with its base-11 negative).
0, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 110, 120, 119, 118, 117, 116, 115, 114, 113, 112, 111, 99, 109, 108, 107, 106, 105, 104, 103, 102, 101, 100, 88, 98, 97, 96, 95, 94, 93, 92, 91, 90, 89, 77, 87, 86, 85, 84, 83, 82, 81, 80, 79, 78, 66, 76, 75, 74, 73, 72, 71, 70, 69, 68, 67
Offset: 0