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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 12 |
| 3 | 152 |
| 4 | 3388 |
| 5 | 85480 |
| 6 | 2642358 |
| 7 | 93830584 |
| 8 | 3870426602 |
| 9 | 179336321514 |
| 10 | 9289851475820 |
| 11 | 529329739784248 |
| 12 | 33294638055400354 |
| 13 | 2251636269472534394 |
| 14 | 165280305640591105462 |
| 15 | 13029806159083867494110 |
| 16 | 1097830097296833990293942 |
[0,12,152,3388,85480,2642358,93830584,3870426602, 179336321514,9289851475820,529329739784248, 33294638055400354,2251636269472534394, 165280305640591105462,13029806159083867494110, 1097830097296833990293942] |