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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 8 |
| 2 | 80 |
| 3 | 832 |
| 4 | 8704 |
| 5 | 91136 |
| 6 | 954368 |
| 7 | 9994240 |
| 8 | 104660992 |
| 9 | 1096024064 |
| 10 | 11477712896 |
| 11 | 120196169728 |
| 12 | 1258710630400 |
| 13 | 13181388849152 |
| 14 | 138037296103424 |
| 15 | 1445545331654656 |
| 16 | 15137947242201088 |
| 17 | 158526641599938560 |
[1,8,80,832,8704,91136,954368,9994240,104660992, 1096024064,11477712896,120196169728,1258710630400, 13181388849152,138037296103424,1445545331654656, 15137947242201088,158526641599938560] |