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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 1974 |
| 3 | 1234948 |
| 4 | 1601489318 |
| 5 | 3541644282540 |
| 6 | 11934462103156540 |
| 7 | 56947950742822581960 |
| 8 | 365458809637016986262790 |
| 9 | 3035813466162156094097686300 |
| 10 | 31694033885101849517370941522644 |
| 11 | 406222401519003083851664224927890360 |
| 12 | 6271146756206887832796744632163811733084 |
[1,10,1974,1234948,1601489318,3541644282540, 11934462103156540,56947950742822581960, 365458809637016986262790, 3035813466162156094097686300, 31694033885101849517370941522644, 406222401519003083851664224927890360, 6271146756206887832796744632163811733084] |