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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 83 |
| 3 | 1027 |
| 4 | 15629 |
| 5 | 279941 |
| 6 | 5764807 |
| 7 | 134217735 |
| 8 | 3486784409 |
| 9 | 100000000009 |
| 10 | 3138428376731 |
| 11 | 106993205379083 |
| 12 | 3937376385699301 |
| 13 | 155568095557812237 |
| 14 | 6568408355712890639 |
| 15 | 295147905179352825871 |
[1,9,83,1027,15629,279941,5764807,134217735, 3486784409,100000000009,3138428376731, 106993205379083,3937376385699301, 155568095557812237,6568408355712890639, 295147905179352825871] |