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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 22 |
| 2 | 484 |
| 3 | 11248 |
| 4 | 260904 |
| 5 | 6434922 |
| 6 | 158069690 |
| 7 | 4126252938 |
| 8 | 107097735673 |
| 9 | 2940365284820 |
[1,22,484,11248,260904,6434922,158069690, 4126252938,107097735673,2940365284820] |