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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 37 |
| 3 | 137 |
| 4 | 41641 |
| 5 | 3887 |
| 6 | 241586893 |
| 7 | 5721418891 |
| 8 | 4315903789009 |
| 9 | 2832484672207 |
| 10 | 183184249105857781 |
| 11 | 2154299222076719401 |
| 12 | 1431144441595717024523 |
| 13 | 386845480523042818420133 |
[1,1,37,137,41641,3887,241586893,5721418891, 4315903789009,2832484672207,183184249105857781, 2154299222076719401,1431144441595717024523, 386845480523042818420133] |