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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 9 |
| 3 | 127 |
| 4 | 2835 |
| 5 | 93901 |
| 6 | 4336878 |
| 7 | 266268402 |
| 8 | 20961918435 |
| 9 | 2057633544961 |
| 10 | 246291719185578 |
| 11 | 35300219800649134 |
| 12 | 5967365133741366446 |
| 13 | 1174674087014062487490 |
| 14 | 266337973265724541242428 |
[1,9,127,2835,93901,4336878,266268402,20961918435, 2057633544961,246291719185578,35300219800649134, 5967365133741366446,1174674087014062487490, 266337973265724541242428] |