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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | 133 |
| 3 | 3547 |
| 4 | 109921 |
| 5 | 3710287 |
| 6 | 132371149 |
| 7 | 4909790011 |
| 8 | 187430229889 |
| 9 | 7315689889207 |
| 10 | 290621404873933 |
| 11 | 11711948497012771 |
| 12 | 477636896775866569 |
| 13 | 19675331299610850871 |
| 14 | 817461706854954936733 |
| 15 | 34215970307619080633947 |
| 16 | 1441443460101276484035169 |
| 17 | 61071445002917964407145031 |
[1,7,133,3547,109921,3710287,132371149,4909790011, 187430229889,7315689889207,290621404873933, 11711948497012771,477636896775866569, 19675331299610850871,817461706854954936733, 34215970307619080633947,1441443460101276484035169, 61071445002917964407145031] |