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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 9 |
| 3 | 166 |
| 4 | 4719 |
| 5 | 182326 |
| 6 | 8927301 |
| 7 | 529922002 |
| 8 | 36988772211 |
| 9 | 2969132797966 |
| 10 | 269488306924833 |
| 11 | 27291375956851546 |
| 12 | 3050923148547318039 |
| 13 | 373187615576953777510 |
| 14 | 49580088565083198922845 |
| 15 | 7109665420655116517351458 |
| 16 | 1094492388113416460752513851 |
[1,1,9,166,4719,182326,8927301,529922002, 36988772211,2969132797966,269488306924833, 27291375956851546,3050923148547318039, 373187615576953777510,49580088565083198922845, 7109665420655116517351458, 1094492388113416460752513851] |