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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 85 |
| 3 | 18852138 |
| 4 | 160367559138277 |
| 5 | 28295985978361118312100 |
| 6 | 67572411262488084551685074297100 |
| 7 | 1569272515289638694593745151597761337133425 |
[0,85,18852138,160367559138277, 28295985978361118312100, 67572411262488084551685074297100, 1569272515289638694593745151597761337133425] |