Counting but the only numbers allowed are:
- Powers of 10 (1, 10, 100, 1000, ...)
- Repeated numbers (111, 222, 333, ...)
- Ascending 1234 sequences (123, 234, 345, ...) We'll consider 2 digits minimum
- Culturally Nice numbers 69 and 420 and their full combinations (69420, 6969, 42069, 696969, ...) It has to be fully made of 69 and 420 so 696 is wrong, 6942 is wrong, 69696 is wrong, 69694 is wrong
The sequence goes like:
1, 10, 11, 12, 22, 23, 33, 34, 44, 45, 55, 56, 66, 67, 69, 77, 78, 88, 89, 99, 100, 111, 123, 222, 234, ...
It's ok to count multiple as long as you don't miss a number