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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 5 |
| 3 | 89 |
| 4 | 2737 |
| 5 | 121399 |
| 6 | 7316101 |
| 7 | 572218716 |
| 8 | 56142822849 |
| 9 | 6731180810945 |
| 10 | 965898950508901 |
| 11 | 163116461798211503 |
| 12 | 31969444766902475185 |
| 13 | 7187057932197297484108 |
| 14 | 1834860441330563739401765 |
| 15 | 527403671798720265634312349 |
| 16 | 169396494914472404237224898305 |
[1,0,5,89,2737,121399,7316101,572218716, 56142822849,6731180810945,965898950508901, 163116461798211503,31969444766902475185, 7187057932197297484108,1834860441330563739401765, 527403671798720265634312349, 169396494914472404237224898305] |