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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 15 |
| 3 | 1 |
| 4 | 4383 |
| 5 | 609 |
| 6 | 8 |
| 7 | 332945 |
| 8 | 70127 |
| 9 | 1920 |
| 10 | 8 |
| 11 | 3818466833 |
| 12 | 1071459023 |
| 13 | 45021783 |
| 14 | 392486 |
| 15 | 675 |
| 16 | 117707753216845145 |
| 17 | 41103397063050887 |
| 18 | 2332341110766495 |
| 19 | 31497752932598 |
| 20 | 113377876875 |
| 21 | 94910400 |
| 22 | 28982153439665068102728041 |
[1,15,1,4383,609,8,332945,70127,1920,8,3818466833, 1071459023,45021783,392486,675,117707753216845145, 41103397063050887,2332341110766495,31497752932598, 113377876875,94910400,28982153439665068102728041] |