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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 161 |
| 3 | 7537 |
| 4 | 289564 |
| 5 | 12635748 |
| 6 | 522569033 |
| 7 | 21989908007 |
| 8 | 923559415946 |
| 9 | 38737498552503 |
| 10 | 1625808615727565 |
| 11 | 68233833241429320 |
| 12 | 2863571252883915815 |
| 13 | 120178359677506216775 |
| 14 | 5043597906899270802555 |
| 15 | 211668526758336137032851 |
[1,161,7537,289564,12635748,522569033,21989908007, 923559415946,38737498552503,1625808615727565, 68233833241429320,2863571252883915815, 120178359677506216775,5043597906899270802555, 211668526758336137032851] |