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A199685 as a simple table

na(n)
06
151
2501
35001
450001
5500001
65000001
750000001
8500000001
95000000001
1050000000001
11500000000001
125000000000001
1350000000000001
14500000000000001
155000000000000001
1650000000000000001
17500000000000000001
185000000000000000001
1950000000000000000001
20500000000000000000001

[6,51,501,5001,50001,500001,5000001,50000001,
 500000001,5000000001,50000000001,500000000001,
 5000000000001,50000000000001,500000000000001,
 5000000000000001,50000000000000001,
 500000000000000001,5000000000000000001,
 50000000000000000001,500000000000000000001]