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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 15 |
| 4 | 25 |
| 5 | 119 |
| 6 | 157 |
| 7 | 2413 |
| 8 | 2623 |
| 9 | 8415 |
| 10 | 14962 |
| 11 | 18303 |
| 12 | 66078 |
| 13 | 1031747 |
| 14 | 62826675 |
| 15 | 692799137 |
| 16 | 759500195 |
| 17 | 1144100379 |
[1,2,15,25,119,157,2413,2623,8415,14962,18303, 66078,1031747,62826675,692799137,759500195, 1144100379] |