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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | 185 |
| 3 | 11471 |
| 4 | 1263185 |
| 5 | 215079159 |
| 6 | 52220520521 |
| 7 | 17117211436287 |
| 8 | 7278847910698529 |
| 9 | 3895256097472909671 |
| 10 | 2561265786122546675545 |
| 11 | 2029572906879775183011503 |
| 12 | 1907361016227301624675795825 |
[1,7,185,11471,1263185,215079159,52220520521, 17117211436287,7278847910698529, 3895256097472909671,2561265786122546675545, 2029572906879775183011503, 1907361016227301624675795825] |