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| n | a(n) |
|---|---|
| 0 | 8 |
| 1 | 12 |
| 2 | 16 |
| 3 | 32 |
| 4 | 80 |
| 5 | 176 |
| 6 | 368 |
| 7 | 752 |
| 8 | 1520 |
| 9 | 3424 |
| 10 | 8592 |
| 11 | 20096 |
| 12 | 70464 |
| 13 | 235072 |
| 14 | 705280 |
| 15 | 3023616 |
| 16 | 13223680 |
| 17 | 55540736 |
| 18 | 278539264 |
| 19 | 1392697344 |
| 20 | 9541095424 |
| 21 | 58609614848 |
| 22 | 410267320320 |
| 23 | 3397142953984 |
| 24 | 24143851798528 |
| 25 | 176071227916288 |
| 26 | 1232666139967488 |
| 27 | 9523075842834432 |
[8,12,16,32,80,176,368,752,1520,3424,8592,20096, 70464,235072,705280,3023616,13223680,55540736, 278539264,1392697344,9541095424,58609614848, 410267320320,3397142953984,24143851798528, 176071227916288,1232666139967488,9523075842834432] |