| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 13201 |
| 3 | 26799038 |
| 4 | 54402034953 |
| 5 | 110436104156566 |
| 6 | 224185237035795041 |
| 7 | 455095920746559777678 |
| 8 | 923844494930279312892313 |
| 9 | 1875403869612546258611618726 |
| 10 | 3807068931468973974702273122481 |
| 11 | 7728348055478147556099355827018718 |
| 12 | 15688542745551708069907717626574876073 |
[6,13201,26799038,54402034953,110436104156566, 224185237035795041,455095920746559777678, 923844494930279312892313, 1875403869612546258611618726, 3807068931468973974702273122481, 7728348055478147556099355827018718, 15688542745551708069907717626574876073] |