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| n | a(n) |
|---|---|
| 1 | 50 |
| 2 | 760 |
| 3 | 52411 |
| 4 | 3477361 |
| 5 | 241961326 |
| 6 | 16599585680 |
| 7 | 1140658285204 |
| 8 | 78428361897720 |
| 9 | 5390322528656652 |
| 10 | 370517687958114665 |
| 11 | 25468098036554313595 |
| 12 | 1750580722347118467767 |
| 13 | 120328698088745644429376 |
[50,760,52411,3477361,241961326,16599585680, 1140658285204,78428361897720,5390322528656652, 370517687958114665,25468098036554313595, 1750580722347118467767,120328698088745644429376] |