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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 33 |
| 3 | 313 |
| 4 | 3113 |
| 5 | 31413 |
| 6 | 314413 |
| 7 | 3141413 |
| 8 | 31411413 |
| 9 | 314151413 |
| 10 | 3141551413 |
| 11 | 31415951413 |
| 12 | 314159951413 |
| 13 | 3141592951413 |
| 14 | 31415922951413 |
| 15 | 314159262951413 |
| 16 | 3141592662951413 |
| 17 | 31415926562951413 |
| 18 | 314159265562951413 |
[3,33,313,3113,31413,314413,3141413,31411413, 314151413,3141551413,31415951413,314159951413, 3141592951413,31415922951413,314159262951413, 3141592662951413,31415926562951413, 314159265562951413] |