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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 4910785 |
| 3 | 6135529675 |
| 4 | 1008618127825 |
| 5 | 74564772630777 |
| 6 | 3913397076494906 |
| 7 | 177779119899659850 |
| 8 | 7631859877504516225 |
| 9 | 322215964319093498225 |
| 10 | 13636766011245325587353 |
| 11 | 584294217357391235758011 |
| 12 | 25488316708898114509899955 |
| 13 | 1135731969645865474902932115 |
[0,1,4910785,6135529675,1008618127825, 74564772630777,3913397076494906, 177779119899659850,7631859877504516225, 322215964319093498225,13636766011245325587353, 584294217357391235758011, 25488316708898114509899955, 1135731969645865474902932115] |