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| n | a(n) |
|---|---|
| 0 | 128 |
| 1 | 62748517 |
| 2 | 4586471424 |
| 3 | 64339296875 |
| 4 | 435817657216 |
| 5 | 1954897493193 |
| 6 | 6722988818432 |
| 7 | 19203908986159 |
| 8 | 47829690000000 |
| 9 | 107213535210701 |
| 10 | 221068140740608 |
| 11 | 425927596977747 |
| 12 | 775771085481344 |
| 13 | 1347646586640625 |
| 14 | 2248392813428736 |
| 15 | 3622557586593623 |
| 16 | 5661610866627712 |
[128,62748517,4586471424,64339296875,435817657216, 1954897493193,6722988818432,19203908986159, 47829690000000,107213535210701,221068140740608, 425927596977747,775771085481344,1347646586640625, 2248392813428736,3622557586593623, 5661610866627712] |