| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 11 |
| 2 | -13 |
| 3 | 29 |
| 4 | 109 |
| 5 | -67 |
| 6 | 6571 |
| 7 | -415 |
| 8 | 162573 |
| 9 | -23663513 |
| 10 | 10230003 |
| 11 | -564409 |
| 12 | 854671223 |
| 13 | -3380281 |
| 14 | 66346781597 |
| 15 | -2525207721201139 |
| 16 | 2050779017959603 |
| 17 | -513555084749 |
| 18 | 258395660795799074117 |
| 19 | -16860247921174939 |
| 20 | 32300672599263555985061 |
| 21 | -5369365617089977921391189 |
[0,11,-13,29,109,-67,6571,-415,162573,-23663513, 10230003,-564409,854671223,-3380281,66346781597, -2525207721201139,2050779017959603,-513555084749, 258395660795799074117,-16860247921174939, 32300672599263555985061, -5369365617089977921391189] |