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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 1 |
| 5 | 7 |
| 6 | 1 |
| 7 | 67 |
| 8 | 73 |
| 9 | 795 |
| 10 | 747 |
| 11 | 59843 |
| 12 | 10661 |
| 13 | 2722871 |
| 14 | 192335 |
| 15 | 266731999 |
| 16 | 104050525 |
| 17 | 63050333629 |
| 18 | 28433577797 |
| 19 | 53230363866129 |
| 20 | 6321654487737 |
| 21 | 49591407282435513 |
| 22 | 2463615767533037 |
| 23 | 72391673108224685819 |
[1,1,3,1,7,1,67,73,795,747,59843,10661,2722871, 192335,266731999,104050525,63050333629, 28433577797,53230363866129,6321654487737, 49591407282435513,2463615767533037, 72391673108224685819] |