| n | a(n) |
|---|---|
| 1 | 56 |
| 2 | 389640 |
| 3 | 518626568 |
| 4 | 430110958155 |
| 5 | 273949132717772 |
| 6 | 143827898685401892 |
| 7 | 64434873104394812016 |
| 8 | 25210227731914720632036 |
| 9 | 8773051977547229666591720 |
| 10 | 2756820326309288648206048280 |
| 11 | 792154472658215852314325527168 |
[56,389640,518626568,430110958155,273949132717772, 143827898685401892,64434873104394812016, 25210227731914720632036,8773051977547229666591720, 2756820326309288648206048280, 792154472658215852314325527168] |