starting with 2 or 3
other starting values
If one changes the starting vaule, how would this influence the sequence?
Look at the sequences with 2 and 3 as starting values:
Starting the sequence with the digit d so that 2 d 9 produces following sequence:
d, 1d, 111d, 311d, 13211d, 111312211d, 31131122211d, 1321132132211d, ...
The last digit of each element of the sequence is the only variable one.