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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 14 |
| 3 | 1426144 |
| 4 | 192153653985253376 |
| 5 | 443075998594975502964308746247864320 |
| 6 | 1097003038214137361436646127021900210236442855769266059743330304 |
[1,14,1426144,192153653985253376, 443075998594975502964308746247864320, 10970030382141373614366461270219002102364428557692\ 66059743330304] |