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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 23 |
| 3 | 1930906 |
| 4 | 36065804158 |
| 5 | 360865277628727 |
| 6 | 2729333815881686935 |
| 7 | 17273734529317171068203 |
| 8 | 95092594038536680078007672 |
| 9 | 464647323565599860735629425620 |
| 10 | 2042649271291756567720032041477070 |
| 11 | 8162854734704367418254962293756751587 |
[0,23,1930906,36065804158,360865277628727, 2729333815881686935,17273734529317171068203, 95092594038536680078007672, 464647323565599860735629425620, 2042649271291756567720032041477070, 8162854734704367418254962293756751587] |