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| n | a(n) |
|---|---|
| 3 | 1 |
| 4 | 3 |
| 5 | 5 |
| 6 | 19 |
| 7 | 62 |
| 8 | 301 |
| 9 | 1413 |
| 10 | 7304 |
| 11 | 38294 |
| 12 | 208052 |
| 13 | 1149018 |
| 14 | 6466761 |
| 15 | 36899604 |
| 16 | 213245389 |
| 17 | 1245624985 |
| 18 | 7345962126 |
| 19 | 43688266206 |
| 20 | 261791220038 |
| 21 | 1579363550250 |
| 22 | 9586582997562 |
| 23 | 58513327318992 |
| 24 | 358957495385684 |
| 25 | 2212294939905234 |
[1,3,5,19,62,301,1413,7304,38294,208052,1149018, 6466761,36899604,213245389,1245624985,7345962126, 43688266206,261791220038,1579363550250, 9586582997562,58513327318992,358957495385684, 2212294939905234] |