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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 104 |
| 3 | 3051 |
| 4 | 72751 |
| 5 | 4309263 |
| 6 | 197267780 |
| 7 | 9743385598 |
| 8 | 481541186894 |
| 9 | 23753464370841 |
| 10 | 1177165425219598 |
| 11 | 58266046167978416 |
| 12 | 2886208357543956203 |
| 13 | 142961429483327026603 |
| 14 | 7081556077991924024988 |
| 15 | 350792681281930188956328 |
[0,104,3051,72751,4309263,197267780,9743385598, 481541186894,23753464370841,1177165425219598, 58266046167978416,2886208357543956203, 142961429483327026603,7081556077991924024988, 350792681281930188956328] |