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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 81 |
| 3 | 610 |
| 4 | 4967 |
| 5 | 40242 |
| 6 | 327123 |
| 7 | 2661918 |
| 8 | 21656459 |
| 9 | 176259458 |
| 10 | 1434313078 |
| 11 | 11673115263 |
| 12 | 94995850464 |
| 13 | 773101634059 |
| 14 | 6291606309132 |
| 15 | 51202379223709 |
| 16 | 416693699123591 |
| 17 | 3391131540449104 |
| 18 | 27597636527429286 |
| 19 | 224594629125220765 |
[8,81,610,4967,40242,327123,2661918,21656459, 176259458,1434313078,11673115263,94995850464, 773101634059,6291606309132,51202379223709, 416693699123591,3391131540449104, 27597636527429286,224594629125220765] |