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| n | a(n) |
|---|---|
| 0 | -1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 12 |
| 4 | 116 |
| 5 | -534 |
| 6 | -19083 |
| 7 | 4653416 |
| 8 | 8687989872 |
| 9 | -128647855586426 |
| 10 | -17178731504646708274 |
| 11 | 22932060477876906089601744 |
| 12 | 336748983792218322012229442319058 |
| 13 | -59340140012235302782558826850918965528904 |
| 14 | -135935979554634873389993183019614435570206186506348 |
| 15 | 4359616519227623971178976912185258573259921937219097427608884 |
[-1,1,3,12,116,-534,-19083,4653416,8687989872, -128647855586426,-17178731504646708274, 22932060477876906089601744, 336748983792218322012229442319058, -59340140012235302782558826850918965528904, -1359359795546348733899931830196144355702061865063\ 48, 43596165192276239711789769121852585732599219372190\ 97427608884] |