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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 9 |
| 3 | 82 |
| 4 | 1089 |
| 5 | 15626 |
| 6 | 287010 |
| 7 | 5764802 |
| 8 | 135270401 |
| 9 | 3487315843 |
| 10 | 100244173394 |
| 11 | 3138428376722 |
| 12 | 107072686593858 |
| 13 | 3937376385699290 |
| 14 | 155601328490478978 |
| 15 | 6568412173896940652 |
| 16 | 295165920677390712833 |
| 17 | 14063084452067724991010 |
[1,9,82,1089,15626,287010,5764802,135270401, 3487315843,100244173394,3138428376722, 107072686593858,3937376385699290, 155601328490478978,6568412173896940652, 295165920677390712833,14063084452067724991010] |