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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 81 |
| 3 | 678 |
| 4 | 5748 |
| 5 | 48802 |
| 6 | 414385 |
| 7 | 3518619 |
| 8 | 29877293 |
| 9 | 253694309 |
| 10 | 2154171994 |
| 11 | 18291531681 |
| 12 | 155317282580 |
| 13 | 1318832060857 |
| 14 | 11198483378779 |
| 15 | 95088702916552 |
| 16 | 807418390272882 |
| 17 | 6855961191710593 |
| 18 | 58215423910060190 |
| 19 | 494319539779559696 |
[8,81,678,5748,48802,414385,3518619,29877293, 253694309,2154171994,18291531681,155317282580, 1318832060857,11198483378779,95088702916552, 807418390272882,6855961191710593, 58215423910060190,494319539779559696] |