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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 64 |
| 3 | 512 |
| 4 | 4088 |
| 5 | 32592 |
| 6 | 259504 |
| 7 | 2063880 |
| 8 | 16398144 |
| 9 | 130175360 |
| 10 | 1032602872 |
| 11 | 8185566032 |
| 12 | 64850011184 |
| 13 | 513508842504 |
| 14 | 4064330589760 |
| 15 | 32155606323456 |
| 16 | 254314670475768 |
| 17 | 2010717722177360 |
| 18 | 15893207240651440 |
| 19 | 125593338184358408 |
[8,64,512,4088,32592,259504,2063880,16398144, 130175360,1032602872,8185566032,64850011184, 513508842504,4064330589760,32155606323456, 254314670475768,2010717722177360, 15893207240651440,125593338184358408] |