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| n | a(n) |
|---|---|
| 0 | 7 |
| 1 | 71 |
| 2 | 719 |
| 3 | 7193 |
| 4 | 71933 |
| 5 | 719333 |
| 6 | 71933317 |
| 7 | 719333177 |
| 8 | 71933317711 |
| 9 | 7193331771103 |
| 10 | 71933317711039 |
| 11 | 7193331771103939 |
| 12 | 719333177110393913 |
| 13 | 7193331771103939133 |
| 14 | 719333177110393913323 |
| 15 | 71933317711039391332309 |
| 16 | 719333177110393913323097 |
| 17 | 719333177110393913323097047 |
[7,71,719,7193,71933,719333,71933317,719333177, 71933317711,7193331771103,71933317711039, 7193331771103939,719333177110393913, 7193331771103939133,719333177110393913323, 71933317711039391332309,719333177110393913323097, 719333177110393913323097047] |