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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 9 |
| 4 | 175 |
| 5 | 8281 |
| 6 | 1856261 |
| 7 | 649893049 |
| 8 | 817291210163 |
| 9 | 1847322434679121 |
| 10 | 14368726069959027071 |
| 11 | 342031303262647675287601 |
| 12 | 13964481217238950868653586531 |
| 13 | 1889891784470148590323094656731121 |
| 14 | 586215019967842464352819482405063771511 |
[1,1,2,9,175,8281,1856261,649893049,817291210163, 1847322434679121,14368726069959027071, 342031303262647675287601, 13964481217238950868653586531, 1889891784470148590323094656731121, 586215019967842464352819482405063771511] |