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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 7 |
| 3 | 82 |
| 4 | 1015 |
| 5 | 15626 |
| 6 | 279862 |
| 7 | 5764802 |
| 8 | 134216695 |
| 9 | 3486784483 |
| 10 | 99999984382 |
| 11 | 3138428376722 |
| 12 | 106993205100070 |
| 13 | 3937376385699290 |
| 14 | 155568095552047430 |
| 15 | 6568408355712906332 |
| 16 | 295147905179218607095 |
| 17 | 14063084452067724991010 |
| 18 | 708235345355334189853093 |
| 19 | 37589973457545958193355602 |
[1,7,82,1015,15626,279862,5764802,134216695, 3486784483,99999984382,3138428376722, 106993205100070,3937376385699290, 155568095552047430,6568408355712906332, 295147905179218607095,14063084452067724991010, 708235345355334189853093, 37589973457545958193355602] |