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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 459 |
| 3 | 7320 |
| 4 | 854959 |
| 5 | 35993876 |
| 6 | 2428955613 |
| 7 | 129447996326 |
| 8 | 7724887856687 |
| 9 | 436026216073506 |
| 10 | 25287203918142223 |
| 11 | 1447193400737482466 |
| 12 | 83360775579090600519 |
| 13 | 4786565078482676164476 |
| 14 | 275268393979592262231620 |
[0,459,7320,854959,35993876,2428955613, 129447996326,7724887856687,436026216073506, 25287203918142223,1447193400737482466, 83360775579090600519,4786565078482676164476, 275268393979592262231620] |