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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 1 |
| 4 | 85 |
| 5 | 221 |
| 6 | 8177 |
| 7 | 204425 |
| 8 | 204425 |
| 9 | 8381425 |
| 10 | 13023445 |
| 11 | 10327591885 |
| 12 | 1497500823325 |
| 13 | 115192371025 |
| 14 | 1334876299525 |
| 15 | 512859474277505 |
| 16 | 131804884889318785 |
| 17 | 38766142614505525 |
| 18 | 100791970797714365 |
| 19 | 91216733571931500325 |
| 20 | 7315582032468906326065 |
| 21 | 124364894551971407543105 |
| 22 | 60316973857706132658405925 |
| 23 | 3196799614458425030895514025 |
[1,2,5,1,85,221,8177,204425,204425,8381425, 13023445,10327591885,1497500823325,115192371025, 1334876299525,512859474277505,131804884889318785, 38766142614505525,100791970797714365, 91216733571931500325,7315582032468906326065, 124364894551971407543105, 60316973857706132658405925, 3196799614458425030895514025] |