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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3203 |
| 3 | 5323 |
| 4 | 75323 |
| 5 | 11753221 |
| 6 | 131175329 |
| 7 | 171311753203 |
| 8 | 19171311753229 |
| 9 | 231917131175321 |
| 10 | 292319171311753231 |
| 11 | 3129231917131175327 |
| 12 | 3731292319171311753239 |
| 13 | 41373129231917131175321 |
| 14 | 43413731292319171311753233 |
| 15 | 4743413731292319171311753269 |
| 16 | 534743413731292319171311753223 |
[2,3203,5323,75323,11753221,131175329, 171311753203,19171311753229,231917131175321, 292319171311753231,3129231917131175327, 3731292319171311753239,41373129231917131175321, 43413731292319171311753233, 4743413731292319171311753269, 534743413731292319171311753223] |