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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 9 |
| 3 | 165 |
| 4 | 24651 |
| 5 | 29522961 |
| 6 | 286646256675 |
| 7 | 21717897090413481 |
| 8 | 12980536689318626076840 |
| 9 | 62082697145168772833294318409 |
| 10 | 2405195296608025717214293025492960466 |
| 11 | 762399078635131851885116768114137369439908725 |
[1,1,9,165,24651,29522961,286646256675, 21717897090413481,12980536689318626076840, 62082697145168772833294318409, 2405195296608025717214293025492960466, 762399078635131851885116768114137369439908725] |