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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 8 |
| 3 | 131 |
| 4 | 3303 |
| 5 | 113137 |
| 6 | 4909829 |
| 7 | 258275887 |
| 8 | 15974450676 |
| 9 | 1136164798581 |
| 10 | 91366516437475 |
| 11 | 8197719659916195 |
| 12 | 811910298234609913 |
| 13 | 87984131560596043801 |
| 14 | 10355660409438349522396 |
| 15 | 1315550191540192189444535 |
| 16 | 179413108433279983993509731 |
[1,1,8,131,3303,113137,4909829,258275887, 15974450676,1136164798581,91366516437475, 8197719659916195,811910298234609913, 87984131560596043801,10355660409438349522396, 1315550191540192189444535, 179413108433279983993509731] |