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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 1 |
| 4 | 32 |
| 5 | 1 |
| 6 | 196 |
| 7 | 1 |
| 8 | 1152 |
| 9 | 1 |
| 10 | 6724 |
| 11 | 1 |
| 12 | 39200 |
| 13 | 1 |
| 14 | 228484 |
| 15 | 1 |
| 16 | 1331712 |
| 17 | 1 |
| 18 | 7761796 |
| 19 | 1 |
| 20 | 45239072 |
| 21 | 1 |
| 22 | 263672644 |
| 23 | 1 |
| 24 | 1536796800 |
| 25 | 1 |
| 26 | 8957108164 |
| 27 | 1 |
| 28 | 52205852192 |
| 29 | 1 |
| 30 | 304278004996 |
| 31 | 1 |
| 32 | 1773462177792 |
| 33 | 1 |
| 34 | 10336495061764 |
| 35 | 1 |
| 36 | 60245508192800 |
| 37 | 1 |
| 38 | 351136554095044 |
| 39 | 1 |
[1,4,1,32,1,196,1,1152,1,6724,1,39200,1,228484,1, 1331712,1,7761796,1,45239072,1,263672644,1, 1536796800,1,8957108164,1,52205852192,1, 304278004996,1,1773462177792,1,10336495061764,1, 60245508192800,1,351136554095044,1] |