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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 7 |
| 3 | 110 |
| 4 | 2875 |
| 5 | 109683 |
| 6 | 5678706 |
| 7 | 380631612 |
| 8 | 31942104109 |
| 9 | 3272150145947 |
| 10 | 401101904099311 |
| 11 | 57890233456712428 |
| 12 | 9706532459502104648 |
| 13 | 1869487973632573739154 |
| 14 | 409621529316840179292622 |
| 15 | 101253590975320030584465534 |
| 16 | 28030292175164530782257192631 |
[1,1,7,110,2875,109683,5678706,380631612, 31942104109,3272150145947,401101904099311, 57890233456712428,9706532459502104648, 1869487973632573739154,409621529316840179292622, 101253590975320030584465534, 28030292175164530782257192631] |