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| n | a(n) |
|---|---|
| 0 | 6 |
| 1 | 49 |
| 2 | 336 |
| 3 | 3608 |
| 4 | 39984 |
| 5 | 568456 |
| 6 | 8788224 |
| 7 | 157119872 |
| 8 | 3070910976 |
| 9 | 66631838464 |
| 10 | 1568964182016 |
| 11 | 40143982850048 |
| 12 | 1104238186174464 |
| 13 | 32575797728674816 |
| 14 | 1024499039235538944 |
| 15 | 34244972509718085632 |
| 16 | 1211785683371470749696 |
| 17 | 45266987105529337544704 |
| 18 | 1779867330217651806928896 |
| 19 | 73484865365862823153369088 |
| 20 | 3178359543535472461866860544 |
| 21 | 143720321925324472350632574976 |
[6,49,336,3608,39984,568456,8788224,157119872, 3070910976,66631838464,1568964182016, 40143982850048,1104238186174464,32575797728674816, 1024499039235538944,34244972509718085632, 1211785683371470749696,45266987105529337544704, 1779867330217651806928896, 73484865365862823153369088, 3178359543535472461866860544, 143720321925324472350632574976] |