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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 8 |
| 2 | 71 |
| 3 | 680 |
| 4 | 6833 |
| 5 | 70568 |
| 6 | 739607 |
| 7 | 7811336 |
| 8 | 82823777 |
| 9 | 879934280 |
| 10 | 9357993191 |
| 11 | 99571637096 |
| 12 | 1059740581649 |
| 13 | 11280265991912 |
| 14 | 120079042716599 |
| 15 | 1278289521926600 |
| 16 | 13608126915979457 |
| 17 | 144867527905855112 |
[1,8,71,680,6833,70568,739607,7811336,82823777, 879934280,9357993191,99571637096,1059740581649, 11280265991912,120079042716599,1278289521926600, 13608126915979457,144867527905855112] |