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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 12 |
| 3 | 1878 |
| 4 | 7943 |
| 5 | 351513 |
| 6 | 3016874 |
| 7 | 64650845 |
| 8 | 773758878 |
| 9 | 10301327801 |
[0,12,1878,7943,351513,3016874,64650845,773758878, 10301327801] |