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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 11 |
| 3 | 101 |
| 4 | 1111 |
| 5 | 6961 |
| 6 | 52551 |
| 7 | 396849 |
| 8 | 2989013 |
| 9 | 22245343 |
| 10 | 166691719 |
| 11 | 1248626317 |
| 12 | 9348231385 |
| 13 | 69979015481 |
| 14 | 523959788091 |
| 15 | 3922930719919 |
| 16 | 29370668470793 |
| 17 | 219896678916165 |
| 18 | 1646364342879165 |
| 19 | 12326287592918831 |
| 20 | 92286557411926649 |
[1,11,101,1111,6961,52551,396849,2989013,22245343, 166691719,1248626317,9348231385,69979015481, 523959788091,3922930719919,29370668470793, 219896678916165,1646364342879165, 12326287592918831,92286557411926649] |