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| n | a(n) |
|---|---|
| 1 | 11 |
| 2 | 13 |
| 3 | 19 |
| 4 | 37 |
| 5 | 89 |
| 6 | 12329 |
| 7 | 209449 |
| 8 | 1106569 |
| 9 | 24344329 |
| 10 | 96342409 |
| 11 | 2504902409 |
| 12 | 17961239296009 |
| 13 | 52580450364682240009 |
| 14 | 2295148179742698933452800009 |
| 15 | 7825229077844441903818866688000009 |
| 16 | 145302140752338100885902776123355299840000009 |
[11,13,19,37,89,12329,209449,1106569,24344329, 96342409,2504902409,17961239296009, 52580450364682240009,2295148179742698933452800009, 7825229077844441903818866688000009, 145302140752338100885902776123355299840000009] |