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| n | a(n) |
|---|---|
| 0 | 16 |
| 1 | 129 |
| 2 | 4144 |
| 3 | 33281 |
| 4 | 1069136 |
| 5 | 8586369 |
| 6 | 275832944 |
| 7 | 2215249921 |
| 8 | 71163830416 |
| 9 | 571525893249 |
| 10 | 18359992414384 |
| 11 | 147451465208321 |
| 12 | 4736806879080656 |
| 13 | 38041906497853569 |
| 14 | 1222077814810394864 |
| 15 | 9814664424981012481 |
| 16 | 315291339414202794256 |
| 17 | 2532145379738603366529 |
[16,129,4144,33281,1069136,8586369,275832944, 2215249921,71163830416,571525893249, 18359992414384,147451465208321,4736806879080656, 38041906497853569,1222077814810394864, 9814664424981012481,315291339414202794256, 2532145379738603366529] |