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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 11 |
| 3 | 92 |
| 4 | 1025 |
| 5 | 14232 |
| 6 | 236403 |
| 7 | 4568720 |
| 8 | 100670529 |
| 9 | 2490511776 |
| 10 | 68341981051 |
| 11 | 2059882505408 |
| 12 | 67645498798721 |
| 13 | 2403948686290816 |
| 14 | 91914992104815459 |
| 15 | 3762299973887526144 |
| 16 | 164148252324092964993 |
| 17 | 7604537914425558921728 |
| 18 | 372812121514187124192875 |
[1,2,11,92,1025,14232,236403,4568720,100670529, 2490511776,68341981051,2059882505408, 67645498798721,2403948686290816,91914992104815459, 3762299973887526144,164148252324092964993, 7604537914425558921728,372812121514187124192875] |