I want to fill series like this
1111
1112
1113
1114
1115
1116
1120
1121
1123...... and so on. The numbers increase by 1 until it reaches 6 as the
last digit. Then it increases by 4.

Any idea how to pull this off? I thought I had it nailed, but the numbers
just do not add up.

B. rgds Zulupiper