| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 286 |
| 3 | 4621 |
| 4 | 56980 |
| 5 | 640663 |
| 6 | 6904678 |
| 7 | 72722233 |
| 8 | 755339992 |
| 9 | 7774461355 |
| 10 | 79520082490 |
| 11 | 809705785165 |
| 12 | 8217213032524 |
| 13 | 83178920046367 |
| 14 | 840306174900622 |
| 15 | 8475694265094817 |
| 16 | 85380606857454976 |
| 17 | 859192675118710099 |
| 18 | 8638686211723117474 |
| 19 | 86794540082486097589 |
| 20 | 871513270875022245748 |
[1,286,4621,56980,640663,6904678,72722233, 755339992,7774461355,79520082490,809705785165, 8217213032524,83178920046367,840306174900622, 8475694265094817,85380606857454976, 859192675118710099,8638686211723117474, 86794540082486097589,871513270875022245748] |