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| n | a(n) |
|---|---|
| 1 | 11 |
| 2 | 467 |
| 3 | 1499 |
| 4 | 16763 |
| 5 | 260339 |
| 6 | 2003387 |
| 7 | 7722419 |
| 8 | 20221283 |
| 9 | 927161471 |
| 10 | 4284484931 |
| 11 | 7355362139 |
| 12 | 84805717127 |
| 13 | 478527373859 |
| 14 | 2046207697631 |
| 15 | 7302359785151 |
| 16 | 21104656617827 |
| 17 | 21104656617827 |
[11,467,1499,16763,260339,2003387,7722419, 20221283,927161471,4284484931,7355362139, 84805717127,478527373859,2046207697631, 7302359785151,21104656617827,21104656617827] |