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| n | a(n) |
|---|---|
| 5 | 1 |
| 6 | 39 |
| 7 | 796 |
| 8 | 14296 |
| 9 | 265103 |
| 10 | 5317342 |
| 11 | 116235247 |
| 12 | 2760729582 |
| 13 | 70870525294 |
| 14 | 1956309944351 |
| 15 | 57803029075220 |
| 16 | 1820704829013410 |
| 17 | 60915564036123607 |
| 18 | 2157741151756229543 |
| 19 | 80681075613289079236 |
| 20 | 3176017007139110899224 |
| 21 | 131302895736890434892224 |
| 22 | 5688257327967598478393309 |
[1,39,796,14296,265103,5317342,116235247, 2760729582,70870525294,1956309944351, 57803029075220,1820704829013410,60915564036123607, 2157741151756229543,80681075613289079236, 3176017007139110899224,131302895736890434892224, 5688257327967598478393309] |