Answer:
321.
Step-by-step explanation:
The next term after 81 is 102 .
Between 102 and 198 inclusive we have (198-102) / 5 + 1 = 96/3 + 1 = 33 terms - these will all have at least one 1 and be divisible by 3.
So 198 = 6 + 33 = 39th term.
After 198 we have 201, 210, 213, 219, 231, 261, 291, 312, 315, 318, 321
The answer is 321..
