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| n | a(n) |
|---|---|
| 1 | 72 |
| 2 | 9711 |
| 3 | 997101 |
| 4 | 99731009 |
| 5 | 9999110007 |
| 6 | 999983100003 |
| 7 | 99999911000003 |
| 8 | 9999998910000019 |
| 9 | 999999937100000007 |
| 10 | 99999999671000000007 |
| 11 | 9999999997710000000019 |
| 12 | 999999999989100000000003 |
| 13 | 99999999999711000000000039 |
| 14 | 9999999999997310000000000037 |
[72,9711,997101,99731009,9999110007,999983100003, 99999911000003,9999998910000019, 999999937100000007,99999999671000000007, 9999999997710000000019,999999999989100000000003, 99999999999711000000000039, 9999999999997310000000000037] |