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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 24 |
| 3 | 160 |
| 4 | 896 |
| 5 | 22528 |
| 6 | 106496 |
| 7 | 2228224 |
| 8 | 9961472 |
| 9 | 192937984 |
| 10 | 15569256448 |
| 11 | 66571993088 |
| 12 | 5085241278464 |
| 13 | 90159953477632 |
| 14 | 378231999954944 |
| 15 | 6614661952700416 |
| 16 | 477381560501272576 |
| 17 | 34011184385901985792 |
[8,24,160,896,22528,106496,2228224,9961472, 192937984,15569256448,66571993088,5085241278464, 90159953477632,378231999954944,6614661952700416, 477381560501272576,34011184385901985792] |