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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 119 |
| 3 | 270 |
| 4 | 2081 |
| 5 | 6279 |
| 6 | 48014 |
| 7 | 223832 |
| 8 | 1258673 |
| 9 | 6255191 |
| 10 | 36099651 |
| 11 | 182317148 |
| 12 | 1002566978 |
| 13 | 5243822530 |
| 14 | 28535482208 |
| 15 | 150520120228 |
| 16 | 809991814859 |
| 17 | 4299042626683 |
| 18 | 23075139229373 |
| 19 | 122959297359243 |
| 20 | 658044273422935 |
[9,119,270,2081,6279,48014,223832,1258673,6255191, 36099651,182317148,1002566978,5243822530, 28535482208,150520120228,809991814859, 4299042626683,23075139229373,122959297359243, 658044273422935] |