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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 11 |
| 4 | 35 |
| 5 | 111 |
| 6 | 351 |
| 7 | 1111 |
| 8 | 3513 |
| 9 | 11111 |
| 10 | 35136 |
| 11 | 111111 |
| 12 | 351364 |
| 13 | 1111111 |
| 14 | 3513641 |
| 15 | 11111111 |
| 16 | 35136418 |
| 17 | 111111111 |
| 18 | 351364184 |
| 19 | 1111111111 |
| 20 | 3513641844 |
| 21 | 11111111111 |
| 22 | 35136418446 |
| 23 | 111111111111 |
| 24 | 351364184463 |
| 25 | 1111111111111 |
[1,3,11,35,111,351,1111,3513,11111,35136,111111, 351364,1111111,3513641,11111111,35136418, 111111111,351364184,1111111111,3513641844, 11111111111,35136418446,111111111111,351364184463, 1111111111111] |