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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 9 |
| 3 | 116 |
| 4 | 1611 |
| 5 | 23354 |
| 6 | 346392 |
| 7 | 5215708 |
| 8 | 79355229 |
| 9 | 1216613579 |
| 10 | 18760964625 |
| 11 | 290630582210 |
| 12 | 4518800966943 |
| 13 | 70471597046192 |
| 14 | 1101783607336424 |
| 15 | 17262385062541884 |
| 16 | 270952977605157692 |
| 17 | 4259594371932890237 |
[1,9,116,1611,23354,346392,5215708,79355229, 1216613579,18760964625,290630582210,4518800966943, 70471597046192,1101783607336424,17262385062541884, 270952977605157692,4259594371932890237] |