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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 9 |
| 4 | 44 |
| 5 | 176 |
| 6 | 651 |
| 7 | 2945 |
| 8 | 14708 |
| 9 | 79188 |
| 10 | 495071 |
| 11 | 3628565 |
| 12 | 29134749 |
| 13 | 265855219 |
| 14 | 2732640025 |
| 15 | 30998016185 |
| 16 | 398665350465 |
[1,5,9,44,176,651,2945,14708,79188,495071,3628565, 29134749,265855219,2732640025,30998016185, 398665350465] |