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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 10 |
| 4 | 126 |
| 5 | 3177 |
| 6 | 158063 |
| 7 | 15473373 |
| 8 | 2981756709 |
| 9 | 1131238674765 |
| 10 | 844937235946975 |
| 11 | 1242458005388315095 |
| 12 | 3596882436029100961277 |
| 13 | 20500197685375360012821576 |
| 14 | 230026108495284153905216078861 |
[0,1,10,126,3177,158063,15473373,2981756709, 1131238674765,844937235946975,1242458005388315095, 3596882436029100961277,20500197685375360012821576, 230026108495284153905216078861] |