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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 17213 |
| 3 | 141470 |
| 4 | 2280331 |
| 5 | 15986168 |
| 6 | 98726075 |
| 7 | 481650122 |
| 8 | 2044254981 |
| 9 | 7567047596 |
| 10 | 25388753287 |
| 11 | 77613247698 |
| 12 | 220319905339 |
| 13 | 584578487982 |
[2,17213,141470,2280331,15986168,98726075, 481650122,2044254981,7567047596,25388753287, 77613247698,220319905339,584578487982] |